NYC tests new possible coronavirus case, as clusters are quarantined and monitored across NY

A New York City resident who recently traveled to Italy is being tested for the new fast-spreading coronavirus, as officials on Long Island and Westchester County deal with clusters of patients being monitored for the illness.

The city still hasn’t seen a confirmed case of the potentially deadly virus, but officials here fear a positive case is inevitable, even as they warn against panic in the face of a global health crisis.

The city Health Department tweeted the announcement Thursday, noting “the person reported symptoms and recent travel to Italy.” The federal Centers for Disease Control and Prevention will test the patient for the virus.

So far, six city residents, including the latest case, and one non-resident visiting here have been tested for coronavirus. All have come back negative.

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Italy hit with coronavirus outbreak
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Italy hit with coronavirus outbreak
A medical staff with protective mask and suit walks at Dr. Fran Mihaljevic hospital for Infectious Diseases in Zagreb, on February 25, 2020 where a young Croatian man who was infected with the new coronavirus is being monitored. - Croatia reported the first known case of the new coronavirus in the Balkans region after a young man who recently returned from Italy was found to be infected. (Photo by Denis LOVROVIC / AFP) (Photo by DENIS LOVROVIC/AFP via Getty Images)
A banner reading " Thanks for all you are doing for us, you are our guardian angels, everything will be alright ", hangs on the main gate of the Spallanzani Hospital for Infectious Diseases, the Italian main hub for coronavirus treatment, in Rome, Saturday, March 14, 2020. For most people, the new coronavirus causes only mild or moderate symptoms. For some, it can cause more severe illness, especially in older adults and people with existing health problems. (AP Photo/Alessandra Tarantino)
A staffer walks at one of the emergency structures that were set up to ease procedures at the Brescia hospital, northern Italy, Thursday, March 12, 2020. Italians woke up to yet further virus-containment restrictions after Premier Giuseppe Conte ordered restaurants, cafes and retail shops closed after imposing a nationwide lockdown on personal movement. For most people, the new coronavirus causes only mild or moderate symptoms, such as fever and cough. For some, especially older adults and people with existing health problems, it can cause more severe illness, including pneumonia. (AP Photo/Luca Bruno)
Paramedics carry an hazardous medical waste box as patients lie on camping beds, in one of the emergency structures that were set up to ease procedures at the Brescia hospital, northern Italy, Thursday, March 12, 2020. Italians woke up to yet further virus-containment restrictions after Premier Giuseppe Conte ordered restaurants, cafes and retail shops closed after imposing a nationwide lockdown on personal movement. For most people, the new coronavirus causes only mild or moderate symptoms, such as fever and cough. For some, especially older adults and people with existing health problems, it can cause more severe illness, including pneumonia. (AP Photo/Luca Bruno)
Foto Roberto Monaldo / LaPresse 09-03-2020 Roma, Italia cronaca Emergenza coronavirus - La situazione nelle strade di Roma Photo Roberto Monaldo / LaPresse 09-03-2020 Rome (Italy) news Coronavirus emergency - The situation in the streets of Rome (Photo by LaPresse/Sipa USA)
MILAN, ITALY - FEBRUARY 25: A woman, wearing a respiratory mask, walks past a placard showing a handshake between two hands representing the Chinese and the Italian national flags and reading 'The enemy is the virus, not the people. Go China!' in the Paolo Sarpi district (Milan's Chinatown) on February 25, 2020 in Milan, Italy. The Chinese community of Milan - the largest in Italy, counting 30.000 people, mainly natives of the coastal province of Zhejiang - has decided to shut its stores and commercial activities following the outbreak of the new coronavirus. Italy is the last country to be hit hard by the virus with 7 dead and more than 288 infected as of today. The spread marks Europe’s biggest outbreak, prompting Italian Government to issue draconian safety measures. (Photo by Emanuele Cremaschi/Getty Images)
MILAN, ITALY - FEBRUARY 25: A woman, wearing a respiratory mask, walks past a placard showing a handshake between two hands representing the Chinese and the Italian national flags and reading 'The enemy is the virus, not the people. Go China!' in the Paolo Sarpi district (Milan's Chinatown) on February 25, 2020 in Milan, Italy. The Chinese community of Milan - the largest in Italy, counting 30.000 people, mainly natives of the coastal province of Zhejiang - has decided to shut its stores and commercial activities following the outbreak of the new coronavirus. Italy is the last country to be hit hard by the virus with 7 dead and more than 288 infected as of today. The spread marks Europe’s biggest outbreak, prompting Italian Government to issue draconian safety measures. (Photo by Emanuele Cremaschi/Getty Images)
MILAN, ITALY - FEBRUARY 25: Three people, wearing a respiratory mask, stroll in the Paolo Sarpi district (Milan's Chinatown) on February 25, 2020 in Milan, Italy. The Chinese community of Milan - the largest in Italy, counting 30.000 people, mainly natives of the coastal province of Zhejiang - has decided to shut its stores and commercial activities following the outbreak of the new coronavirus. Italy is the last country to be hit hard by the virus with 7 dead and more than 288 infected as of today. The spread marks Europe’s biggest outbreak, prompting the Italian Government to issue draconian safety measures. (Photo by Emanuele Cremaschi/Getty Images)
MILAN, ITALY - FEBRUARY 25: A woman, wearing a respiratory mask, uses her smartphone as she stands in the Paolo Sarpi district (Milan's Chinatown) on February 25, 2020 in Milan, Italy. The Chinese community of Milan - the largest in Italy, counting 30.000 people, mainly natives of the coastal province of Zhejiang - has decided to shut its stores and commercial activities following the outbreak of the new coronavirus. Italy is the last country to be hit hard by the virus with 7 dead and more than 288 infected as of today. The spread marks Europe’s biggest outbreak, prompting the Italian Government to issue draconian safety measures. (Photo by Emanuele Cremaschi/Getty Images)
MILAN, ITALY - FEBRUARY 25: A woman, wearing a respiratory mask, walks past the window of a pharmacy where is sticked a sign reading - both in Italian and Chinese - 'No More Masks' in the Paolo Sarpi district (Milan's Chinatown) on February 25, 2020 in Milan, Italy. The Chinese community of Milan - the largest in Italy, counting 30.000 people, mainly natives of the coastal province of Zhejiang - has decided to shut its stores and commercial activities following the outbreak of the new coronavirus. Italy is the last country to be hit hard by the virus with 7 dead and more than 288 infected as of today. The spread marks Europe’s biggest outbreak, prompting the Italian Government to issue draconian safety measures. (Photo by Emanuele Cremaschi/Getty Images)
MILAN, ITALY - FEBRUARY 25: A man, wearing a respiratory mask, rides a bicycle past a shuttered store in the Paolo Sarpi district (Milan's Chinatown) on February 25, 2020 in Milan, Italy. The Chinese community of Milan - the largest in Italy, counting 30.000 people, mainly natives of the coastal province of Zhejiang - has decided to shut its stores and commercial activities following the outbreak of the new coronavirus. Italy is the last country to be hit hard by the virus with 7 dead and more than 288 infected as of today. The spread marks Europe’s biggest outbreak, prompting Italian Government to issue draconian safety measures. (Photo by Emanuele Cremaschi/Getty Images)
MILAN, ITALY - FEBRUARY 25: Two people, both wearing a respiratory mask, walk past a shuttered restaurant in the Paolo Sarpi district (Milan's Chinatown) on February 25, 2020 in Milan, Italy. The Chinese community of Milan - the largest in Italy, counting 30.000 people, mainly natives of the coastal province of Zhejiang - has decided to shut its stores and commercial activities following the outbreak of the new coronavirus. Italy is the last country to be hit hard by the virus with 7 dead and more than 288 infected as of today. The spread marks Europe’s biggest outbreak, prompting Italian Government to issue draconian safety measures. (Photo by Emanuele Cremaschi/Getty Images)
A man wearing a mask walks outside the H10 Costa Adeje Palace Hotel in La Caleta, on February 25, 2020, where hundreds of people were confined after an Italian tourist was hospitalised with a suspected case of coronavirus. - Tourists staying in a four-star hotel on the Spanish island of Tenerife, in the Canary archipielago, were confined to their rooms today following the announcement of a suspected novel coronavirus, COVID-19, case waiting for official confirmation. This possible case was detected yesterday in Tenerife, where an Italian national passed a first test which turned out to be positive, announced the Spanish Ministry of Health. (Photo by DESIREE MARTIN / AFP) (Photo by DESIREE MARTIN/AFP via Getty Images)
Medical staff with protective suit gestures at Dr. Fran Mihaljevic hospital for Infectious Diseases in Zagreb, on February 25, 2020 where a young Croatian man who was infected with the new coronavirus is being monitored. - Croatia reported the first known case of the new coronavirus in the Balkans region after a young man who recently returned from Italy was found to be infected. (Photo by Denis LOVROVIC / AFP) (Photo by DENIS LOVROVIC/AFP via Getty Images)
Pharmacies available for sale of sanitizing gel and protective masks, Milan, Italy, on February 25 2020. Due to the spread of the coronavirus many supermarket pharmacies have exhausted the sale of protective masks and sanitizing gels, and there are few that still sell there (Photo by Mairo Cinquetti/NurPhoto via Getty Images)
Tourists stand on the balconies of their rooms at the H10 Costa Adeje Palace Hotel in La Caleta, on February 25, 2020, where hundreds of people were confined to their rooms after an Italian tourist was hospitalised with a suspected case of coronavirus. - Tourists staying in a four-star hotel on the Spanish island of Tenerife, in the Canary archipielago, were confined to their rooms today following the announcement of a suspected novel coronavirus, COVID-19, case waiting for official confirmation. This possible case was detected yesterday in Tenerife, where an Italian national passed a first test which turned out to be positive, announced the Spanish Ministry of Health. (Photo by DESIREE MARTIN / AFP) (Photo by DESIREE MARTIN/AFP via Getty Images)
Tourists stand on the balconies of their rooms at the H10 Costa Adeje Palace Hotel in La Caleta, on February 25, 2020, where hundreds of people were confined to their rooms after an Italian tourist was hospitalised with a suspected case of coronavirus. - Tourists staying in a four-star hotel on the Spanish island of Tenerife, in the Canary archipielago, were confined to their rooms today following the announcement of a suspected novel coronavirus, COVID-19, case waiting for official confirmation. This possible case was detected yesterday in Tenerife, where an Italian national passed a first test which turned out to be positive, announced the Spanish Ministry of Health. (Photo by DESIREE MARTIN / AFP) (Photo by DESIREE MARTIN/AFP via Getty Images)
(L-R) State Council Bernhard Tilg, Director of Regional emergency medical services Franz Katzgraber, Director of Internal Medicine at the University Hospital Guenther Weiss and Head of the Institute for Hygiene and Medical Microbiology Cornelia Lass-Floerl give a press conference at the Innsbruck Hospital on the confirmed coronavirus cases in Tyrol on February 25, 2020 in Innsbruck, Austria. - Two people in Austria have tested positive for the new coronavirus, authorities said on February 25, marking the country's first cases after an outbreak in northern Italy. (Photo by Johann GRODER / APA / AFP) / Austria OUT (Photo by JOHANN GRODER/APA/AFP via Getty Images)
Medical staff with protective suit walks at Dr. Fran Mihaljevic hospital for Infectious Diseases in Zagreb, on February 25, 2020 where a young Croatian man who was infected with the new coronavirus is being monitored. - Croatia reported the first known case of the new coronavirus in the Balkans region after a young man who recently returned from Italy was found to be infected. (Photo by Denis LOVROVIC / AFP) (Photo by DENIS LOVROVIC/AFP via Getty Images)
(L-R) State Council Bernhard Tilg, Director of Regional emergency medical services Franz Katzgraber, Director of Internal Medicine at the University Hospital Guenther Weiss and Head of the Institute for Hygiene and Medical Microbiology Cornelia Lass-Floerl give a press conference at the Innsbruck Hospital on the confirmed coronavirus cases in Tyrol on February 25, 2020 in Innsbruck, Austria. - Two people in Austria have tested positive for the new coronavirus, authorities said on February 25, marking the country's first cases after an outbreak in northern Italy. (Photo by Johann GRODER / APA / AFP) / Austria OUT (Photo by JOHANN GRODER/APA/AFP via Getty Images)
A picture taken on February 25, 2020 shows a biohazard sign at the entrance of the quarantine department of Dr. Fran Mihaljevic hospital for Infectious Diseases in Zagreb where a young Croatian man who was infected with the new coronavirus is being monitored. - Croatia reported the first known case of the new coronavirus in the Balkans region after a young man who recently returned from Italy was found to be infected. (Photo by Denis LOVROVIC / AFP) (Photo by DENIS LOVROVIC/AFP via Getty Images)
Medical staff with protective suit gestures at Dr. Fran Mihaljevic hospital for Infectious Diseases in Zagreb, on February 25, 2020 where a young Croatian man who was infected with the new coronavirus is being monitored. - Croatia reported the first known case of the new coronavirus in the Balkans region after a young man who recently returned from Italy was found to be infected. (Photo by Denis LOVROVIC / AFP) (Photo by DENIS LOVROVIC/AFP via Getty Images)
NIORTHWICH, ENGLAND - FEBRUARY 25: A general view of Cransley Independent Day School which has taken the step to close for a week after pupils and staff returned from a skiing trip in the coronavirus hit region of Northern Italy on February 25, 2020 in Northwich, England. The school self imposed the closure after a small number on the skiing trip suffered flu like symptoms. (Photo by Christopher Furlong/Getty Images)
MILAN, ITALY - FEBRUARY 25: Two young women, both wearing a respiratory mask, walk in the streets on February 25, 2020 in Milan, Italy. Italy is the last country to be hit hard by the virus with 7 dead and more than 283 infected as of today. The spread marks Europe’s biggest outbreak, prompting the Italian Government to issue draconian safety measures. (Photo by Emanuele Cremaschi/Getty Images)
MILAN, ITALY - FEBRUARY 25: Two young men, both wearing a respiratory mask, lend a free floating bicycle on February 25, 2020 in Milan, Italy. Italy is the last country to be hit hard by the virus with 7 dead and more than 283 infected as of today. The spread marks Europe’s biggest outbreak, prompting the Italian Government to issue draconian safety measures. (Photo by Emanuele Cremaschi/Getty Images)
MILAN, ITALY - FEBRUARY 25: A young man observes her girlfriend, wearing a respiratory mask, turning her right heel on a mosaic of a bull - as a traditional sign of good luck - in Galleria Vittorio Emanuele II, on February 25, 2020 in Milan, Italy. Italy is the last country to be hit hard by the virus with 7 dead and more than 283 infected as of today. The spread marks Europe’s biggest outbreak, prompting the Italian Government to issue draconian safety measures. (Photo by Emanuele Cremaschi/Getty Images)
MILAN, ITALY - FEBRUARY 25: A man, wearing a respiratory mask, takes a selfie of himself and his girlfiend in Galleria Vittorio Emanuele II, on February 25, 2020 in Milan, Italy. Italy is the last country to be hit hard by the virus with 7 dead and more than 283 infected as of today. The spread marks Europe’s biggest outbreak, prompting the Italian Government to issue draconian safety measures. (Photo by Emanuele Cremaschi/Getty Images)
MILAN, ITALY - FEBRUARY 25: A woman, wearing a respiratory mask, snaps a picture of a window in Via Montenapoleone, Milan's fashion district, on February 25, 2020 in Milan, Italy. Italy is the last country to be hit hard by the virus with 7 dead and more than 283 infected as of today. The spread marks Europe’s biggest outbreak, prompting the Italian Government to issue draconian safety measures. (Photo by Emanuele Cremaschi/Getty Images)
A journalist films a board reading "Because of the outbreak in Italy, in order to reduce public activity, Best Express is provisionally closed from February 25 until March 1", on an iron curtain of a shop in the Chinese district of Milan on February 25, 2020. - The decision to close the stores was made by the Chinese community of the city of Milan as a consequence of the current health situation, following the outbreak of the new coronavirus. Several towns in northern Italy have been put under isolation measures in an attempt to stem the spread of the virus. Seven people in Italy have so far died after catching the virus, all of whom were either elderly or had pre-existing conditions. (Photo by Miguel MEDINA / AFP) (Photo by MIGUEL MEDINA/AFP via Getty Images)
People wearing respiratory masks walk in a street of the Chinese district of Milan on February 25, 2020. - The decision to close the stores was made by the Chinese community of the city of Milan as a consequence of the current health situation, following the outbreak of the new coronavirus. Several towns in northern Italy have been put under isolation measures in an attempt to stem the spread of the virus. Seven people in Italy have so far died after catching the virus, all of whom were either elderly or had pre-existing conditions. (Photo by Miguel MEDINA / AFP) (Photo by MIGUEL MEDINA/AFP via Getty Images)
The parish of the church of Zorlesco village Nunzio Rosi answers questions to a journalist at a check-point at the entrance of the small town of Zorlesco, southeast of Milan, on February 24, 2020, situated in the red zone of the COVID-19, the new coronavirus outbreak, in northern Italy. - Italy, the country with the most confirmed cases in Europe, reports its fifth death and the number of people contracting the disease continues to mount, with 219 people now testing positive. (Photo by Miguel MEDINA / AFP) (Photo by MIGUEL MEDINA/AFP via Getty Images)
MILAN, Feb. 24, 2020 -- A woman wearing a mask rides a bicycle in Milan, Italy, on Feb. 24, 2020. Six people have died and 222 have tested positive for the novel coronavirus nationwide in Italy, Angelo Borrelli, chief of Civil Protection Department and Extraordinary Commissioner for the Coronavirus Emergency, told a press conference at 6 p.m. local time on Monday. (Photo by Daniele Mascolo/Xinhua via Getty) (Xinhua/ via Getty Images)
The parish of the church of Zorlesco village Nunzio Rosi answers questions to a journalist at a check-point at the entrance of the small town of Zorlesco, southeast of Milan, on February 24, 2020, situated in the red zone of the COVID-19, the new coronavirus outbreak, in northern Italy. - Italy, the country with the most confirmed cases in Europe, reports its fifth death and the number of people contracting the disease continues to mount, with 219 people now testing positive. (Photo by Miguel MEDINA / AFP) (Photo by MIGUEL MEDINA/AFP via Getty Images)
MILAN, Feb. 24, 2020 -- People wearing masks are seen in Milan, Italy, on Feb. 24, 2020. Six people have died and 222 have tested positive for the novel coronavirus nationwide in Italy, Angelo Borrelli, chief of Civil Protection Department and Extraordinary Commissioner for the Coronavirus Emergency, told a press conference at 6 p.m. local time on Monday. (Photo by Daniele Mascolo/Xinhua via Getty) (Xinhua/ via Getty Images)
A man wearing face mask, in Turin, Italy, on February 24, 2020. More than 220 people were infected by Covid-19 in Italy, with 6 people deaths. Italy is at the third place in the world ranking as infected countries, after China e South Korea. Italy has disposed the closure of schools, university, pubs and imposed a stop to religious functions in Lombardia and Veneto regions. (Photo by Mauro Ujetto/NurPhoto via Getty Images)
MILAN, ITALY - 2020/02/24: A man wearing a face mask walks with his friend in Corso Como. Precautionary measures, such as wearing face masks have been taken by citizens and tourists in Milan, for dealing with the fear of being infected by Coronavirus (COVID -19), as more than one hundred confirmed cases have been discovered in north Italy and three old people died. According to a regional decree, many activities (educational, cultural, museum tours etc) will be suspended until 1st or 2nd March; thus, people reacted with a massive rush to buy water, food supply and soaps. (Photo by Valeria Ferraro/SOPA Images/LightRocket via Getty Images)
MILAN, ITALY - 2020/02/24: A view of Empty shelves in a local supermarket. Precautionary measures, such as wearing face masks have been taken by citizens and tourists in Milan, for dealing with the fear of being infected by Coronavirus (COVID -19), as more than one hundred confirmed cases have been discovered in north Italy and three old people died. According to a regional decree, many activities (educational, cultural, museum tours etc) will be suspended until 1st or 2nd March; thus, people reacted with a massive rush to buy water, food supply and soaps. (Photo by Valeria Ferraro/SOPA Images/LightRocket via Getty Images)
Healthcare staff operating in the screening of Coronavirus at the Martini hospital in Turin operate to separate usual patients from potentially infected by Covid-19, in Turin, Italy, on February 24, 2020. More than 220 people were infected by Covid-19 in Italy, with 6 people deaths. Italy is at the third place in the world ranking as infected countries, after China e South Korea. Italy has disposed the closure of schools, university, pubs and imposed a stop to religious functions in Lombardia and Veneto regions. (Photo by Mauro Ujetto/NurPhoto via Getty Images)
MILAN, ITALY - 2020/02/24: A family wearing face masks stand at the hall of Porta Garibaldi Station. Precautionary measures, such as wearing face masks have been taken by citizens and tourists in Milan, for dealing with the fear of being infected by Coronavirus (COVID -19), as more than one hundred confirmed cases have been discovered in north Italy and three old people died. According to a regional decree, many activities (educational, cultural, museum tours etc) will be suspended until 1st or 2nd March; thus, people reacted with a massive rush to buy water, food supply and soaps. (Photo by Valeria Ferraro/SOPA Images/LightRocket via Getty Images)
MILAN, ITALY - 2020/02/24: An Asian woman shops at a local supermarket. Precautionary measures, such as wearing face masks have been taken by citizens and tourists in Milan, for dealing with the fear of being infected by Coronavirus (COVID -19), as more than one hundred confirmed cases have been discovered in north Italy and three old people died. According to a regional decree, many activities (educational, cultural, museum tours etc) will be suspended until 1st or 2nd March; thus, people reacted with a massive rush to buy water, food supply and soaps. (Photo by Valeria Ferraro/SOPA Images/LightRocket via Getty Images)
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Nassau County health officials told reporters Wednesday they’re monitoring 83 people who remain isolated in their homes. On Thursday, the county announced it has tested six people so far, and all have come back negative. Suffolk County is monitoring 29 cases.

In Westchester, eight travelers returning home from places were an outbreak was reported are under a “voluntary quarantine in their homes,” county officials said.

The global count of those sickened by the virus hovered around 82,000 on Thursday, with 433 new cases reported in China and another 505 in South Korea, the Associated Press reported.

Fifteen cases have been confirmed so far in the United States.

The new virus is a member of the coronavirus family that can cause colds or more serious illnesses such as SARS and MERS. The virus can cause fever, coughing, wheezing and pneumonia. Health officials think it spreads mainly from droplets when an infected person coughs or sneezes, similar to how the flu spreads.

Officials are advising people to take steps to avoid infection with coronavirus or other respiratory infections like colds or the flu, including washing hands with soap and water and avoiding close contact with people who are sick.

In New York City, the FDNY has established a protocol for handling a suspected case.

First responders don protective equipment if they suspect the disease, and send word to other participating agencies as they take the patient to the hospital. Paramedics have been instructed to ask suspected patients if they have recently traveled to China or have had contact with anyone who has, officials said.

Earlier this week, Mayor de Blasio asked the federal government to increase surveillance of travelers, help the city acquire more face masks and let the city Health Department test suspected cases itself. After the CDC sent faulty test kits to some states, only a dozen state and local health departments have been able to conduct tests themselves.

45 PHOTOS
Coronavirus outbreak
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Coronavirus outbreak
Vice President Mike Pence bumps elbows with Washington Gov. Jay Inslee, left, during a news conference, Thursday, March 5, 2020, at Camp Murray in Washington state. Pence was in Washington to discuss the state's efforts to fight the spread of the COVID-19 coronavirus, and officials have been avoiding shaking hands to prevent the spread of germs. (AP Photo/Ted S. Warren)
In this image from video, provided by the California National Guard, airmen with the 129th Rescue Wing drop virus testing kits down to the Grand Princess cruise ship off the coast of California Thursday, March 5, 2020. Scrambling to keep the coronavirus at bay, officials ordered a cruise ship with 3,500 people aboard to stay back from the California coast Thursday until passengers and crew can be tested, after a traveler from its previous voyage died of the disease and at least two others became infected. The California National Guard 129th Rescue Wing lowered test kits onto the 951-foot (290-meter) Grand Princess by rope as the vessel lay at anchor off Northern California, and authorities said the results would be available on Friday. Princess Cruise Lines said fewer than 100 people aboard had been identified for testing. (California National Guard via AP)
A woman wears a face mask to protect against the COVID-19 (Coronavirus) after arriving at the LAX airport in Los Angeles, California on March 5, 2020. - California has declared a state of emergency as the number of novel coronavirus cases and deaths in the US continues to climb. (Photo by Mark RALSTON / AFP) (Photo by MARK RALSTON/AFP via Getty Images)
Empty containers for travel hand sanitizer are seen at a store following warnings about COVID-19 in Kirkland, Washington on March 5, 2020. - The US reported its first case of the disease in January and its first death on February 29 -- both in the state of Washington in the country's Pacific Northwest. Since then the toll has risen to 11 and the virus has spread to at least 14 states, infecting more than 180 people, according to an AFP tally. On Thursday, Washington state officials announced a jump in cases, from 39 to 70. Ten of the 11 deaths have been reported there, with the other in California. (Photo by Jason Redmond / AFP) (Photo by JASON REDMOND/AFP via Getty Images)
Mike Weatherill, holds a photo of his mom Louise Weatherill, 85, a resident of Life Care Center who died, speaks during a press conference held by family of residents of the nursing home, where some patients have died from COVID-19, in Kirkland, Washington on March 5, 2020. - The US reported its first case of the disease in January and its first death on February 29 -- both in the state of Washington in the country's Pacific Northwest. Since then the toll has risen to 11 and the virus has spread to at least 14 states, infecting more than 180 people, according to an AFP tally. On March 5, Washington state officials announced a jump in cases, from 39 to 70. Ten of the 11 deaths have been reported there, with the other in California. (Photo by Jason Redmond / AFP) (Photo by JASON REDMOND/AFP via Getty Images)
DENVER, CO - MARCH 5: Gov. Jared Polis speaks during a press conference to address the first confirmed case of Coronavirus in Colorado at the Colorado Department of Public Health and Environment on Thursday, March 5, 2020. Gov. Jared Polis said the first confirmed individual is a man in his 30s, who traveled to Italy last month and was recreating in Colorado. Polis added that the man's girlfriend, who was traveling with him has been quarantined. A second case was reported during the press conference, but no information was provided by Polis or the officials flanking him. (Photo by AAron Ontiveroz/MediaNews Group/The Denver Post via Getty Images)
Adilisha Patrom, owner of a co-working and event space next to Gallaudet University, organizes face masks, hand sanitizer and other supplies inside her pop up shop on Thursday, March 5, 2020, in Washington. Inside her storefront, she displays different face mask models and hand sanitizer bottles alongside information from the Centers for Disease Control and Prevention. (AP Photo/Nathan Ellgren)
In this March 4, 2020 photo, two women wear masks as they ride a subway train, in New York. Two more cases of the new coronavirus have been confirmed in New York City, raising New York state's total to 13, Mayor Bill de Blasio said Thursday. (AP Photo/Richard Drew)
A security guard wears gloves while holding a basketball during halftime of an NBA basketball game between the Los Angeles Clippers and Houston Rockets Thursday, March 5, 2020, in Houston. The NBA has told players to avoid high-fiving fans and strangers and avoid taking any item for autographs, the league's latest response in its ongoing monitoring of the coronavirus crisis. (AP Photo/David J. Phillip)
Vice President Mike Pence, left, bumps elbows with Maj. Gen. Bret Daugherty, right, Adjutant General of Washington State, before a tour of the Washington State Emergency Operations Center, Thursday, March 5, 2020 at Camp Murray in Washington state to discuss the COVID-19 coronavirus. Officials are avoiding shaking hands as a precaution against the virus. (AP Photo/Ted S. Warren)
Golden State Warriors fan Brandon Lai wears a mask because of the coronavirus outbreak before attending an NBA basketball game between the Warriors and the Toronto Raptors in San Francisco, Thursday, March 5, 2020. (AP Photo/Jeff Chiu)
A police officer wears a face mask inside El Alto airport in Bolivia, Wednesday, Feb. 26, 2020. With Brazil reporting the first case of the COVID-19 virus, neighboring countries and other nations around Latin America are attempting to block the possible arrival of the virus. (AP Photo/Juan Karita)
Passengers wear face masks to protect against the COVID-19 (Coronavirus) after arriving at the LAX airport in Los Angeles, California on March 5, 2020. - California has declared a state of emergency as the number of novel coronavirus cases and deaths in the US continues to climb. (Photo by Mark RALSTON / AFP) (Photo by MARK RALSTON/AFP via Getty Images)
Foreign diplomats wearing face masks attend at a briefing by South Korean Foreign Minister Kang Kyung-wha on the situation of the COVID-19 outbreak in Korea, at the foreign ministry in Seoul Friday, March 6, 2020. (Jung Yeon-je /Pool Photo via AP)
People wearing face masks walk through a subway station in Beijing, Friday, March 6, 2020. North Korea said Friday it has released several hundred foreigners from a quarantine imposed as part of its vigilant prevention efforts to avoid an outbreak of the coronavirus that has spread around the world. (AP Photo/Mark Schiefelbein)
A worker produces hand sanitizer at the Companhia Nacional do Álcool (CNA) factory in Piracicaba, Brazil, Tuesday, March 3, 2020. Last week the factory added a second shift of workers to produce more hand sanitizer, and while the CNA was never an exporter, it's considering that by adding a third shift. One week ago, Brazil confirmed Latin America’s first case of the new coronavirus. (AP Photo/Andre Penner)
A Child is seen wearing a mask inside an MTR Train on February 22, 2020 in Hong Kong, China. the coronavirus or Covid-19 which originated from Wuhan China has infected over 77,000 and killed 2361 worldwide to date. (Photo by Vernon Yuen/NurPhoto via Getty Images)
People wear masks to help guard against the Coronavirus on a street in downtown Tehran, Iran, Sunday, Feb. 23, 2020. Iran's health ministry raised Sunday the death toll from the new virus to 8 people in the country, amid concerns that clusters there, as well as in Italy and South Korea, could signal a serious new stage in its global spread. (AP Photo/Ebrahim Noroozi)
People wear masks to help guard against the Coronavirus in downtown Tehran, Iran, Sunday, Feb. 23, 2020. On Sunday Iran's health ministry raised the death toll from the new virus to 8 people in the country, amid concerns that clusters there, as well as in Italy and South Korea, could signal a serious new stage in its global spread. (AP Photo/Ebrahim Noroozi)
This Saturday, Feb. 22, 2020, photo released by Xinhua News Agency, shows medical workers in protective suits at a coronavirus detection lab in Wuhan in central China's Hubei Province. The fresh national figures for the disease that emerged in China in December came as the number of viral infections soared mostly in and around the southeastern city of Daegu, where they were linked to a local church and a hospital. (Cheng Min/Xinhua via AP)
Mary Cahill, left, leaves a news conference where officials discussed the proposal for housing coronavirus patients at the Fairview Development Center in Costa Mesa, Calif., Saturday, Feb. 22, 2020. A court temporarily blocked the U.S. government from sending up to 50 people infected with a new virus from China to the Southern California city for quarantine after local officials argued that the plan lacked details about how the community would be protected from the outbreak. (Mindy Schauer/The Orange County Register via AP)
Personnel carry new beds inside the hospital of Codogno, near Lodi in Northern Italy, Friday, Feb. 21,2020. Health officials reported the country's first cases of contagion of COVID-19 in people who had not been in China. The hospital in Codogno is one of the hospitals - along with specialized Sacco Hospital in Milan - which is hosting the infected persons and the people that were in contact with them and are being isolated. (AP Photo/Luca Bruno)
Una persona toma fotografías cerca del crucero Diamond Princess en cuarentena, en el puerto de Yokohama, cerca de Tokio, el viernes 21 de febrero de 2020. (AP Foto/Eugene Hoshiko)
A medic worker disinfects a room in the sanatorium after the quarantine period has ended in Bogandinsky in the Tyumen region, about 2150 kilometers (1344 miles) east of Moscow, Russia, Friday, Feb. 21, 2020. 144 people who were evacuated from the epicenter of the CONVID-19 coronavirus outbreak in Wuhan, China, were released from a 14-day quarantine in western Siberia. None of them tested positive for the virus. (AP Photo/Maxim Slutsky)
Un trabajador vestido con un traje de protección rocía desinfectante como precaución contra un coronavirus en una estación de metro de Seúl, Corea del Sur, el 21 de febrero de 2020. (AP Foto/Ahn Young-joon)
Workers wearing protective gears help clean each other's suits after disinfecting as a precaution against the coronavirus at a subway station in Seoul, South Korea, Friday, Feb. 21, 2020. South Korea on Friday declared a "special management zone" around a southeastern city where a surging viral outbreak, largely linked to a church in Daegu, threatens to overwhelm the region's health system. (AP Photo/Ahn Young-joon)
Un autobús con pasajeros del buque crucero en cuarentena Diamond Princess sale del puerto de Yokohama, cerca de Tokio, Japón, jueves 20 de febrero de 2020. Dos pasajeros ancianos han muerto, siendo las primeras víctimas fatales del nuevo virus en el buque. (AP Foto/Eugene Hoshiko)
China's Foreign Minister Wang Yi speaks during a joint press conference of the Co-Chairs Special ASEAN-China Foreign Ministers' meeting on the Novel Coronavirus Pneumonia in Vientiane, Laos, Thursday, Feb. 20, 2020. (AP Photo/Sakchai Lalit)
En esta fotografía publicada por la agencia noticiosa Xinhua, un farmacéutico procesa gránulos de la medicina tradicional china en el hospital provincial de Gansu especializado en este tipo de medicina, en Lanzhou, en la provincia noroccidental china de Gansu, el jueves 20 de febrero de 2020. La medicina tradicional china se ha utilizado ampliamente para combatir la enfermedad causada por el nuevo coronavirus. (Fan Peishen/Xinhua vía AP)
En esta foto distribuida por la embajada de Ucrania en China, una pasajera ucraniana hace una señal de victoria en el bus del aeropuerto al avión chárter que evacuará a unas 70 afectadas por el brote de un nuevo virus. Entre los evacuados hay 45 ucranianos y 27 personas de Argentina, República Dominicana, Costa Rica, Panamá, Israel y Ecuador. (AP Foto/Servicio de Prensa del Ministerio del Exterior de Ucrania)
Clinical support technician Douglas Condie extracts viruses from swab samples as analytic work continues to examine the genetic structure of a virus in the coronavirus testing laboratory at Glasgow Royal Infirmary, Glasgow, Scotland, Wednesday Feb. 19, 2020. The COVID-19 virus originally centred in China now has multiple cases confirmed worldwide. (Jane Barlow/PA via AP)
In this Monday, Feb. 17, 2020, photo released by Xinhua News Agency, patients infected with the coronavirus take rest at a temporary hospital converted from Wuhan Sports Center in Wuhan in central China's Hubei Province. China reported thousands new virus cases and more deaths in its update Tuesday on a disease outbreak that has caused milder illness in most people, an assessment that promoted guarded optimism from global health authorities. (Xiao Yijiu/Xinhua via AP)
In this Monday, Feb. 17, 2020, photo, volunteers make the handmade cotton masks in Hong Kong. Volunteers from a Hong Kong theater group are turning their backstage skills to helping out against the new coronavirus, sewing reusable protective masks for those who can't access or afford them. Jo Ngai, a drama lover and founder of the Nonsensemakers, along with her friend Jessie Han, have turned a theater rehearsal room into a temporary handmade mask factory. (AP Photo/Kin Cheung)
This undated electron microscope image made available by the U.S. National Institutes of Health in February 2020 shows the Novel Coronavirus SARS-CoV-2. Also known as 2019-nCoV, the virus causes COVID-19. The sample was isolated from a patient in the U.S. (NIAID-RML via AP)
In this Feb. 16, 2020, photo, runners, some wearing masks, compete in a Kumamoto castle marathon in Kumamoto city, western Japan. Organizers of the Tokyo Marathon set for March 1, 2020 are drastically reducing the number of participants out of fear of the spread of the coronavirus from China. The general public is essentially being barred from the race. (Kyodo News via AP)
En esta imagen del 17 de febrero de 2020, autobuses con pasajeros del crucero en cuarentena Diamond Princess salen de un puerto en Yokohama, cerca de Tokio. (AP Foto/Jae C. Hong, Archivo)
Family members of Pakistani students studying in Wuhan, China, hold a demonstration calling for the evacuation of their relatives after the Chinese city was badly hit by the coronavirus, in Karachi, Pakistan, Sunday, Feb. 16, 2020. (AP Photo/Fareed Khan)
A group of quarantined passengers exercise on the Diamond Princess cruise ship Saturday, Feb. 15, 2020, in Yokohama, near Tokyo. A viral outbreak that began in China has infected more than 67,000 people globally. The World Health Organization has named the illness COVID-19, referring to its origin late last year and the coronavirus that causes it. (AP Photo/Jae C. Hong)
SEOUL, SOUTH KOREA - FEBRUARY 23: In this handout image provided by South Korean Presidential Blue House, South Korean President Moon Jae-in speaks during a meeting about coronavirus (COVID-19) at a government complex on February 23, 2020 in Seoul, South Korea. South Korea reported 169 new cases of the coronavirus (COVID-19) bringing the total number of infections in the nation to 602, with the potentially fatal illness spreading fast across the country. (Photo by South Korean Presidential Blue House via Getty Images)
Japan's Prime Minister Shinzo Abe (L) attends a meeting at the new COVID-19 coronavirus infectious disease control headquarters at the prime minister's office in Tokyo on February 23, 2020. - Japan on February 23 confirmed the first case of a former Japanese passenger of a coronavirus-stricken cruise ship testing positive for the disease after initially receiving a clean bill of health. (Photo by STR / JIJI PRESS / AFP) / JAPAN OUT (Photo by STR/JIJI PRESS/AFP via Getty Images)
TAIPEI, TAIWAN - 2020/02/23: Commuters in the Taipei MRT system all wearing surgical mask as the 2019 Novel coronavirus that originated in China is spreading to other countries worldwide. Taiwan authorities fear a serious pandemic and people are advised to wear surgical masks especially when confined in small spaces such as public transports. (Photo by Alberto Buzzola/LightRocket via Getty Images)
WUHAN, Feb. 22, 2020 -- A staff member handles nucleic acid testing samples at a novel coronavirus detection lab in Wuhan, central China's Hubei Province, Feb. 22, 2020. Since its operation on Feb. 6, the novel coronavirus detection lab named "Huoyan", jointly constructed by the local government and other institutions, has tested tens of thousands of nucleic acid testing samples. For days, including the "Huoyan" lab, Wuhan's 40 NAT institutions together, have been able to test 14,000 NAT samples per day, zeroing the number of daily NAT from all possible coronavirus patients. (Photo by Cheng Min/Xinhua via Getty) (Xinhua/Cheng Min via Getty Images)
BEIRUT, LEBANON - FEBRUARY 22: Students wear masks to protect themselves from coronavirus as a precaution in Beirut, Lebanon on February 22, 2020. Lebanese Health Minister Dr. Hamad Hassan made a statement on first coronavirus case at the Rafik Hariri University Hospital. (Photo by Hussam Chbaro/Anadolu Agency via Getty Images)
A Lebanese nurse wearing a protective mask works at a ward where the first case of coronavirus in the country is being treated, at the Rafik Hariri University Hospital in the southern outskirts of the capital Beirut, on February 22, 2020. - Lebanon confirmed on February 21, the first case of the novel coronavirus, found in a 45-year-old Lebanese woman who had travelled from the holy city of Qom in Iran, while two other cases were being investigated. (Photo by ANWAR AMRO / AFP) (Photo by ANWAR AMRO/AFP via Getty Images)
SOUTHAMPTON, ENGLAND - FEBRUARY 22: An LED screen shows Southampton's support against the coronavirus during the Premier League match between Southampton FC and Aston Villa at St Mary's Stadium on February 22, 2020 in Southampton, United Kingdom. (Photo by Alex Broadway/Getty Images)
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“I am frustrated like I know many of you are that we have had issues with our test,” Nancy Messonnier, director of the CDC’s National Center for Immunization and Respiratory Diseases, said Wednesday. “I want to assure you that we are working to modify the kit and hope to send out a new version to state and local jurisdictions soon.”

Health experts on Thursday blasted the federal government’s preparedness, zeroing in on a four-day delay to screen a California woman with the virus, the first case of unknown origin “who reportedly did not have relevant travel history or exposure to another known patient with COVID-19,” the CDC announced.

Following the California case, the CDC on Thursday expanded the criteria for who should get tested, and updated its website to reflect those changes.

Fear of the virus helped blow nearly 1,200 points off the Dow Jones Industrial Average on Thursday — the worst one-day drop in U.S. stocks since 2011. This week’s stock losses wiped out a year’s worth of gain, even as President Trump has tried to downplay fears about the virus and blamed the media for raising alarm.

On Wednesday, Trump tapped Vice President Mike Pence to lead the country’s response to the virus, though the former governor of Indiana has no medical expertise.

“I gave a press conference yesterday that was really a very good press conference, and some people thought it was great…. Basically, it was a calming press conference," Trump told reporters Thursday.

“It’s going to disappear. One day, it’s like a miracle, it will disappear, and from our shores, you know, it could get worse before it gets better,” Trump said. “It could maybe go away. We’ll see what happens. Nobody really knows. The fact is the greatest experts, I’ve spoken to them all, nobody really knows.”

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Market down due to coronavirus fears
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Market down due to coronavirus fears
Traders work in front of a board displaying the chart of Germany's share index DAX at the stock exchange in Frankfurt am Main, western Germany, on February 28, 2020. - Stock markets plunged further Friday, February 28, 2020, with equities on course for the largest weekly drop since the global financial crisis more than a decade ago on fears that the coronavirus could devastate the world economy, while oil prices tanked as well. (Photo by Daniel ROLAND / AFP) (Photo by DANIEL ROLAND/AFP via Getty Images)
28 February 2020, Hessen, Frankfurt/Main: An exchange trader at the Frankfurt Stock Exchange looks at his monitors. The most important German leading index, the Dax, fell by more than 5 percent in the morning. Concerns about a corona epidemic have been weighing on financial markets worldwide for days. Photo: Boris Roessler/dpa (Photo by Boris Roessler/picture alliance via Getty Images)
Mask-clad commuters make their way to work during morning rush hour at the Shinagawa train station in Tokyo on February 28, 2020. - Tokyo's key Nikkei index plunged nearly three percent at the open on February 28 after US and European sell-offs with investors worried about the economic impact of the coronavirus outbreak. (Photo by CHARLY TRIBALLEAU / AFP) (Photo by CHARLY TRIBALLEAU/AFP via Getty Images)
Mask-clad commuters make their way to work during morning rush hour at the Shinagawa train station in Tokyo on February 28, 2020. - Tokyo's key Nikkei index plunged nearly three percent at the open on February 28 after US and European sell-offs with investors worried about the economic impact of the coronavirus outbreak. (Photo by CHARLY TRIBALLEAU / AFP) (Photo by CHARLY TRIBALLEAU/AFP via Getty Images)
Mask-clad commuters make their way to work during morning rush hour at the Shinagawa train station in Tokyo on February 28, 2020. - Tokyo's key Nikkei index plunged nearly three percent at the open on February 28 after US and European sell-offs with investors worried about the economic impact of the coronavirus outbreak. (Photo by CHARLY TRIBALLEAU / AFP) (Photo by CHARLY TRIBALLEAU/AFP via Getty Images)
Mask-clad commuters make their way to work during morning rush hour at the Shinagawa train station in Tokyo on February 28, 2020. - Tokyo's key Nikkei index plunged nearly three percent at the open on February 28 after US and European sell-offs with investors worried about the economic impact of the coronavirus outbreak. (Photo by CHARLY TRIBALLEAU / AFP) (Photo by CHARLY TRIBALLEAU/AFP via Getty Images)
NEW YORK, NY - FEBRUARY 27: Traders work on the floor of the New York Stock Exchange on February 27, 2020 in New York City. With concerns growing about how the coronavirus might affect the economy, stocks fell for the fourth straight day. The Dow Jones Industrial Average lost almost 1200 points on Thursday. (Photo by Scott Heins/Getty Images)
Traders work during the opening bell at the New York Stock Exchange (NYSE) on February 27, 2020 at Wall Street in New York City. - Wall Street stocks opened sharply lower, joining a sell-off in most global bourses on fears the coronavirus will grow into a significant international health crisis. About five minutes into trading, the Dow Jones Industrial Average was down 1.8 percent, or about 480 points. The blue-chip index has fallen the last five days. (Photo by Johannes EISELE / AFP) (Photo by JOHANNES EISELE/AFP via Getty Images)
Traders work during the opening bell at the New York Stock Exchange (NYSE) on February 27, 2020 at Wall Street in New York City. - Wall Street stocks opened sharply lower Thursday, joining a sell-off in most global bourses on fears the coronavirus will grow into a significant international health crisis. About five minutes into trading, the Dow Jones Industrial Average was down 1.8 percent, or about 480 points. The blue-chip index has fallen the last five days. (Photo by Johannes EISELE / AFP) (Photo by JOHANNES EISELE/AFP via Getty Images)
Traders work during the opening bell at the New York Stock Exchange (NYSE) on February 27, 2020 at Wall Street in New York City. - Wall Street stocks opened sharply lower, joining a sell-off in most global bourses on fears the coronavirus will grow into a significant international health crisis. About five minutes into trading, the Dow Jones Industrial Average was down 1.8 percent, or about 480 points. The blue-chip index has fallen the last five days. (Photo by Johannes EISELE / AFP) (Photo by JOHANNES EISELE/AFP via Getty Images)
Traders work during the opening bell at the New York Stock Exchange (NYSE) on February 27, 2020 at Wall Street in New York City. - Wall Street stocks opened sharply lower Thursday, joining a sell-off in most global bourses on fears the coronavirus will grow into a significant international health crisis. About five minutes into trading, the Dow Jones Industrial Average was down 1.8 percent, or about 480 points. The blue-chip index has fallen the last five days. (Photo by Johannes EISELE / AFP) (Photo by JOHANNES EISELE/AFP via Getty Images)
Traders work during the opening bell at the New York Stock Exchange (NYSE) on February 27, 2020 at Wall Street in New York City. - Wall Street stocks opened sharply lower Thursday, joining a sell-off in most global bourses on fears the coronavirus will grow into a significant international health crisis. About five minutes into trading, the Dow Jones Industrial Average was down 1.8 percent, or about 480 points. The blue-chip index has fallen the last five days. (Photo by Johannes EISELE / AFP) (Photo by JOHANNES EISELE/AFP via Getty Images)
Traders work during the opening bell at the New York Stock Exchange (NYSE) on February 27, 2020 at Wall Street in New York City. - Wall Street stocks opened sharply lower Thursday, joining a sell-off in most global bourses on fears the coronavirus will grow into a significant international health crisis. About five minutes into trading, the Dow Jones Industrial Average was down 1.8 percent, or about 480 points. The blue-chip index has fallen the last five days. (Photo by Johannes EISELE / AFP) (Photo by JOHANNES EISELE/AFP via Getty Images)
The TSE Arrows market centre is seen at the Tokyo Stock Exchange (TSE) in Tokyo on February 26, 2020. - Tokyo stocks opened lower on February 26 extending losses on Wall Street, as the coronavirus continued to spread and public officials warned of the increasing likelihood of a pandemic. (Photo by Kazuhiro NOGI / AFP) (Photo by KAZUHIRO NOGI/AFP via Getty Images)
A pedestrian stands in front of an electronic quotation board displaying share prices of the Nikkei 225 Index in Tokyo on February 26, 2020. - Tokyo stocks opened lower on February 26 extending losses on Wall Street, as the coronavirus continued to spread and public officials warned of the increasing likelihood of a pandemic. (Photo by Kazuhiro NOGI / AFP) (Photo by KAZUHIRO NOGI/AFP via Getty Images)
TOKYO, JAPAN - FEBRUARY 25: Pedestrians wearing face masks walk past a monitor displaying the Nikkei 225 index and other financial figures outside a securities firm on February 25 in Tokyo, Japan. The Nikkei index dropped more than 3.5 percent at the open on Monday as global concerns grow about the economic impact of the Coronavirus. (Photo by Tomohiro Ohsumi/Getty Images)
NEW YORK, NY - FEBRUARY 25: Traders work through the closing minutes of trading Tuesday on the New York Stock Exchange floor on February 25, 2020 in New York City. Fueled by deepening concerns of the Coronavirus becoming a global pandemic, the stock market plunged Tuesday, with the Dow Jones Industrial Average losing almost 900 points. (Photo by Scott Heins/Getty Images)
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