Cuba 'incidents' reportedly caused brain injury, nerve damage to diplomats

WASHINGTON, Aug 23 (Reuters) - A doctor who evaluated American and Canadian diplomats working in Cuba diagnosed them with conditions as serious as mild traumatic brain injury and damage to the central nervous system, CBS News said on Wednesday, citing medical records it reviewed.

The diplomats had complained of symptoms including hearing loss, nausea, headaches and balance disorders after what were described as "incidents" that began affecting them in Havana beginning in late 2016, CBS News said.

Officials are investigating whether the diplomats were targets of some form of sonic attack directed at their homes, CBS reported, citing a source familiar with the incidents. The source said the incidents had continued to occur on the Communist-ruled island and that some U.S. diplomats had cut short their assignments there.

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President Obama's visit to Cuba
Cuban President Raul Castro (R) raises US President Barack Obama's hand during a joint press conference at the Revolution Palace in Havana on March 21, 2016. Cuba's Communist President Raul Castro on Monday stood next to Barack Obama and hailed his opposition to a long-standing economic 'blockade,' but said it would need to end before ties are fully normalized. AFP PHOTO/STR / AFP / STR (Photo credit should read STR/AFP/Getty Images)
HAVANA, CUBA - MARCH 21: U.S. President Barack Obama (L) greets House Minority Leader Nancy Pelosi (D-CA) (C) while acknowledging members of Congress that are attending a state dinner at the Palace of the Revolution March 21, 2016 in Havana, Cuba. March 21, 2016 in Havana, Cuba. This is the first time a sitting U.S. president has visited Cuba in 88 years. (Photo by Chip Somodevilla/Getty Images)
US President Barack Obama (R) and First Lady Michelle Obama arrive to the state dinner at the Revolution Palace in Havana on March 21, 2016. Obama and Castro vowed Monday in Havana to set aside their differences in pursuit of what the US president called a 'new day' for the long bitterly divided neighbors. AFP PHOTO/Adalberto Roque / AFP / ADALBERTO ROQUE (Photo credit should read ADALBERTO ROQUE/AFP/Getty Images)
US Secretary of State John Kerry (R) speaks with Cuban First Vice President Miguel Diaz Canel ahead of the state dinner at the Revolution Palace in Havana on March 21, 2016. US President Barack Obama and his Cuban counterpart Raul Castro vowed Monday in Havana to set aside their differences in pursuit of what the US president called a 'new day' for the long bitterly divided neighbors. AFP PHOTO/Adalberto Roque / AFP / ADALBERTO ROQUE (Photo credit should read ADALBERTO ROQUE/AFP/Getty Images)
US President Barack Obama gestures during an entrepreneurship panel discussion in Havana on March 21, 2016. Obama and his Cuban counterpart Raul Castro vowed Monday in Havana to set aside their differences in pursuit of what the US president called a 'new day' for the long bitterly divided neighbors. AFP PHOTO/Rodrigo Arangua / AFP / RODRIGO ARANGUA (Photo credit should read RODRIGO ARANGUA/AFP/Getty Images)
US President Barack Obama speaks during an entrepreneurship panel discussion in Havana on March 21, 2016. Obama and his Cuban counterpart Raul Castro vowed Monday in Havana to set aside their differences in pursuit of what the US president called a 'new day' for the long bitterly divided neighbors. AFP PHOTO/RODRIGO ARANGUA / AFP / RODRIGO ARANGUA (Photo credit should read RODRIGO ARANGUA/AFP/Getty Images)
HAVANA, CUBA - MARCH 21: The Presidential motorcade carries U.S. President Obama from the Cuban State Council following a joint press conference on March 21, 2016 in Havana, Cuba. Mr. Obama, who is on a 48 hour trip to Cuba, is the first sitting U.S. President to visit Cuba in almost 90 years.(Photo by Sven Creutzmann/Mambo photo/Getty Images)
HAVANA, CUBA - MARCH 21: U.S. President Barack Obama and Cuban President Raul Castro hold a joint press conference at the Cuban State Council, on March 21, 2016 in Havana, Cuba. Mr. Obama, who is on a 48 hour trip to Cuba, is the first sitting U.S. President to visit Cuba in almost 90 years. (Photo by Ernesto Mastrascusa/LatinContent/Getty Images)
Cuban President Raul Castro delivers a statement alongside U.S. President Barack Obama at the Palacio de la Revolucion in Havana, Cuba, on Monday, March 21, 2016. (Al Diaz/Miami Herald/TNS via Getty Images)
U.S. President Barack Obama delivers a statement alongside Cuban President Raul Castro at the Palacio de la Revolucion in Havana, Cuba, on Monday, March 21, 2016. (Al Diaz/Miami Herald/TNS via Getty Images)
HAVANA, CUBA - MARCH 21: U.S. President Barack Obama stands near the Jose Marti memorial after taking part in a wreath laying ceremony in Revolution Square on March 21, 2016 in Havana, Cuba. Mr. Obama's visit is the first in nearly 90 years for a sitting president, the last one being Calvin Coolidge. (Photo by Ernesto Mastrascusa/LatinContent/Getty Images)
US President Barack Obama (C-L) and Cuban President Raul Castro (C-R) meet at the Revolution Palace in Havana on March 21, 2016. Cuba's Communist President Raul Castro on Monday stood next to Barack Obama and hailed his opposition to a long-standing economic 'blockade,' but said it would need to end before ties are fully normalized. AFP PHOTO/Nicholas KAMM / AFP / NICHOLAS KAMM (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)
HAVANA, CUBA - MARCH 21: President Barack Obama stands with Salvador Valdez Mesa, Vice President of the Council of Ministry, as they take part in a wreath laying ceremony at the Jose Marti memorial in Revolution Square on March 21, 2016 in Havana, Cuba. Mr. Obama's visit is the first in nearly 90 years for a sitting president, the last one being Calvin Coolidge. (Photo by Joe Raedle/Getty Images)
US Secretary of State John Kerry (L) listens to the US national anthem next to the US delegation at the Revolution Palace in Havana on March 21, 2016. US President Barack Obama and his Cuban counterpart Raul Castro met Monday in Havana's Palace of the Revolution for groundbreaking talks on ending the standoff between the two neighbors. Obama, meeting Castro for only the third time for formal talks, was the first US president in Cuba since 1928. AFP PHOTO/ NICHOLAS KAMM / AFP / NICHOLAS KAMM (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)
HAVANA, CUBA - MARCH 21: U.S. President Barack Obama walks up the stairs of the Palacio de la Revolucion to meet Cuban President Raul Castro on March 21, 2016 in Havana, Cuba. Mr. Obama's visit is the first in nearly 90 years for a sitting president, the last one being Calvin Coolidge. (Photo by Joe Raedle/Getty Images)
HAVANA, CUBA - MARCH 21: U.S. President Barack Obama and Cuban President Raul Castro greet one another at the Palace of the Revolution March 21, 2016 in Havana, Cuba. The first sitting U.S. president to visit Cuba in 88 years, Obama and Castro will be sitting down for bilateral talks. (Photo by Chip Somodevilla/Getty Images)
US President Barack Obama talks to tourists and Cubans at his arrival to the Havana Cathedral, on March 20, 2016. On Sunday, Obama became the first US president in 88 years to visit Cuba, touching down in Havana for a landmark trip aimed at ending decades of Cold War animosity. AFP PHOTO/YAMIL LAGE / AFP / YAMIL LAGE (Photo credit should read YAMIL LAGE/AFP/Getty Images)
HAVANA, CUBA - MARCH 20: U.S. President Barack Obama (C) walks through the the Museum of the City of Havana during a walking tour of the historic Old Havana guided by city historian Eusebio Leal (R) March 20, 2016 in Havana, Cuba. Obama is the first sitting president to visit Cuba in nearly 90 years. (Photo by Chip Somodevilla/Getty Images)
HAVANA, CUBA - MARCH 20: U.S. President Barack Obama (C), first lady Michelle Obama and their daughters Malia, 17, and Sasha, 14, stop to look at a painting of Abraham Lincoln in the Museum of the City of Havana during a walking tour of the historic Old Havana guided by city historian Eusebio Leal (L) March 20, 2016 in Havana, Cuba. Obama is the first sitting president to visit Cuba in nearly 90 years. (Photo by Chip Somodevilla/Getty Images)
US President Barack Obama signs a visitors' book at the Revolution Palace in Havana on March 21, 2016. US President Barack Obama and his Cuban counterpart Raul Castro met Monday in Havana's Palace of the Revolution for groundbreaking talks on ending the standoff between the two neighbors. AFP PHOTO/ NICHOLAS KAMM / AFP / NICHOLAS KAMM (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)
US President Barack Obama attends a wreath-laying ceremony at Jose Marti monument in the Revolution Palace of Havana next to the Vice-President of the Cuban Council Salvador Valdes Mesa (R) on March 21, 2016. US President Barack Obama and his Cuban counterpart Raul Castro met Monday in Havana's Palace of the Revolution for groundbreaking talks on ending the standoff between the two neighbors. AFP PHOTO/ STR / AFP / STR (Photo credit should read STR/AFP/Getty Images)
HAVANA, CUBA - MARCH 21: U.S. President Barack Obama (R) and Cuban President Raul Castro pose for photographs after greeting one another at the Palace of the Revolution March 21, 2016 in Havana, Cuba. The first sitting U.S. president to visit Cuba in 88 years, Obama and Castro will sit down for bilateral talks and will deliver joint statements to the news media. (Photo by Chip Somodevilla/Getty Images)
US President Barack Obama (L) and Cuban President Raul Castro meet at the Revolution Palace in Havana on March 21, 2016. US President Barack Obama and his Cuban counterpart Raul Castro met Monday in Havana's Palace of the Revolution for groundbreaking talks on ending the standoff between the two neighbors. AFP PHOTO/ NICHOLAS KAMM / AFP / NICHOLAS KAMM (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)
HAVANA, CUBA - MARCH 21: President Barack Obama and John Kerry, U.S. Secretary of State, listen to the playing of the U.S. National Anthem as they take part in a wreath laying ceremony at the Jose Marti memorial in Revolution Square on March 21, 2016 in Havana, Cuba. Mr. Obama's visit is the first in nearly 90 years for a sitting president, the last one being Calvin Coolidge. (Photo by Joe Raedle/Getty Images)
US President Barack Obama (R), First Lady Michelle Obama (C) and US Charge d'Affaires in Cuba Jeffrey DeLaurentis meet with US embassy staff in Havana on March 20, 2016. Obama arrived in Cuba to bury the hatchet in a more than half-century-long Cold War conflict that turned the communist island and its giant neighbor into bitter enemies. AFP PHOTO/Nicholas KAMM / AFP / NICHOLAS KAMM (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)
HAVANA, CUBA - MARCH 20: President Barack Obama waves as he arrives at Jose Marti International Airport on Air Force One for a 48-hour visit on March 20, 2016 in Havana, Cuba. Mr. Obama's visit is the first in nearly 90 years for a sitting president, the last one being Calvin Coolidge. (Photo by Joe Raedle/Getty Images)
HAVANA, CUBA - MARCH 20: U.S. President Barack Obama waves as he arrives at Jose Marti International Airport on Airforce One for a 48-hour visit on March 20, 2016 in Havana, Cuba. Mr. Obama's visit is the first in nearly 90 years for a sitting president, the last one being Calvin Coolidge. (Photo by Joe Raedle/Getty Images)
The plane transporting US President Barack Obama lands at Jose Marti international airport in Havana on March 20, 2016. Obama, who is on a historic three-day visit to the communist-ruled island, flew to Cuba Sunday to bury the hatchet in a more than half-century-long Cold War standoff, but the arrest of dozens of dissidents just as his plane took off underlined the delicacy of the mission. AFP PHOTO/ Yuri CORTEZ / AFP / YURI CORTEZ (Photo credit should read YURI CORTEZ/AFP/Getty Images)
HAVANA, CUBA - MARCH 20: President Barack Obama, Michelle Obama and Sasha Obama (R) arrive at Jose Marti International Airport on Airforce One for a 48-hour visit on March 20, 2016 in Havana, Cuba. Mr. Obama's visit is the first in nearly 90 years for a sitting president, the last one being Calvin Coolidge. (Photo by Joe Raedle/Getty Images)
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Asked about the CBS report, a U.S. State Department spokeswoman said the department did not have "definitive answers" on the source or cause of the incidents.

"An investigation into the incidents is ongoing," the spokeswoman said.

The department said earlier this month that a number of Americans serving in Cuba had returned to the United States for "medical reasons" that were not life-threatening.

Spokeswoman Heather Nauert said two weeks ago the State Department learned of incidents at its embassy in Havana in late 2016. She said they "caused a variety of physical symptoms" in U.S. government employees.

Several U.S. citizens at the embassy were evacuated over the past six months for treatment of a variety of complaints. Some subsequently received hearing aids.

Although Washington expelled two Cuban diplomats over the incidents, Cuba has said it was investigating the U.S. allegations and would never allow its territory to be used for any action against diplomatic personnel or their families.

"The Cuban government has assured us it is also investigating and taking appropriate measures," the State Department spokeswoman said on Wednesday.

A spokeswoman for Canada's foreign ministry said Canada likewise was working to determine the cause.

"At this time, we do not have any reason to believe Canadian tourists and other visitors could be affected," spokeswoman Brianne Maxwell told Reuters. (Reporting by David Alexander; additional reporting by Yeganeh Torbati in Washington and David Ljunggren in Ottawa; Editing by Dan Grebler and Tom Brown)

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