'Mystery' disease confuses health officials in Nigeria

Before you go, we thought you'd like these...
'Mysterious' Illness Strikes Nigeria

Health officials in Nigeria are scrambling to figure out a 'mystery' disease that's killed 18 people.

A local doctor told CNN the victims have died within 24 hours of showing symptoms and five people are currently being treated.

The outbreak started on April 13 in Ondo in the southeastern part of the country and those affected are between the ages of 25 and 60. Officials say the disease does not appear to be contagious at this time.

Symptoms reportedly include headache, blurred vision, loss of sight and unconsciousness.

Some suspect the illnesses may be the result of locally brewed alcohol, and doctors say they plan to carry out tests on one victim who died in a hospital.

The World Health Organization's Gregory Härtl said in a tweet that Ebola has been ruled out as well as any other virus or bacterial infection. The "current hypothesis is herbicides."

See how Nigeria dealt with the Ebola outbreak of 2014 in the gallery below:

16 PHOTOS
Nigeria Ebola
See Gallery
'Mystery' disease confuses health officials in Nigeria
Nigerian health officials wait to screen passengers at the arrival hall of Murtala Muhammed International Airport in Lagos, Nigeria, Monday, Aug. 4, 2014. Nigerian authorities on Monday confirmed a second case of Ebola in Africa's most populous country, an alarming setback as officials across the region battle to stop the spread of a disease that has killed more than 700 people. (AP Photo/Sunday Alamba)
A student washes his hands to prevent the spread of the Ebola virus at a school in Lagos on October 8, 2014. Public and private schools in at least 11 states of the country resumed academic activities on October 8 in compliance with the directive of state governments and respective chapters of the Nigeria Union of Teachers (NUT) after an enforced extension because of the outbreak of the virus in the cities of Lagos and Port Harcourt.The federal government had ordered schools to resume on September 22, but teachers union some states refused to return to work until they were provided with anti-Ebola kits and other logistics required to prevent the spread of the Ebola virus. The Ebola outbreak in Nigeria is almost over, US health officials said on October 7, in a rare sign of authorities turning the tide on the highly contagious disease that has killed more than 3,000 in West Africa. AFP PHOTO/PIUS UTOMI EKPEI (Photo credit should read PIUS UTOMI EKPEI/AFP/Getty Images)
A Health official takes the body temperature of an Ukrainian sailor on the MV Pintail ship, as they check for signs of the Ebola virus at the Apapa Sea Port, in Lagos, on September 29, 2014. Health officials have begun the screening of cargo ship crews transiting through the ports of Nigeria to prevent cross border transmission of Ebola through sea and cargo ports. Nigeria has cleared all patients under surveillance for the Ebola virus, the federal health ministry said on September 24, 2014. 'There is nobody again under surveillance for the Ebola virus in any part of Nigeria. All those under surveillance have completed their mandatory 21-day period stipulated by the WHO,' ministry's spokesman Dan Nwomeh told AFP, referring to the World Health Organization. PHOTO/PIUS UTOMI EKPEI (Photo credit should read PIUS UTOMI EKPEI/AFP/Getty Images)
A teacher ckecks body temperature of pupils for the Ebola virus at a school in Lagos on October 8, 2014. Public and private schools in at least 11 states of the country resumed academic activities on October 8 in compliance with the directive of state governments and respective chapters of the Nigeria Union of Teachers (NUT) after an enforced extension because of the outbreak of the virus in the cities of Lagos and Port Harcourt.The federal government had ordered schools to resume on September 22, but teachers union some states refused to return to work until they were provided with anti-Ebola kits and other logistics required to prevent the spread of the Ebola virus. The Ebola outbreak in Nigeria is almost over, US health officials said on October 7, in a rare sign of authorities turning the tide on the highly contagious disease that has killed more than 3,000 in West Africa. AFP PHOTO/PIUS UTOMI EKPEI (Photo credit should read PIUS UTOMI EKPEI/AFP/Getty Images)
Health officials takes the body temperature of an Ukrainian worker on the MV Pintail cargo ship, as they check for signs of the Ebola virus at the Apapa Sea Port, in Lagos, on September 29, 2014. Health officials have begun the screening of cargo ship crews transiting through the ports of Nigeria to prevent cross border transmission of Ebola through sea and cargo ports. Nigeria has cleared all patients under surveillance for the Ebola virus, the federal health ministry said on September 24, 2014. 'There is nobody again under surveillance for the Ebola virus in any part of Nigeria. All those under surveillance have completed their mandatory 21-day period stipulated by the WHO,' ministry's spokesman Dan Nwomeh told AFP, referring to the World Health Organization. PHOTO/PIUS UTOMI EKPEI (Photo credit should read PIUS UTOMI EKPEI/AFP/Getty Images)
Pupils listen as teacher speaks about the Ebola virus during the assembly at a school in Lagos on October 8, 2014. Public and private schools in at least 11 states of the country resumed academic activities on October 8 in compliance with the directive of state governments and respective chapters of the Nigeria Union of Teachers (NUT) after an enforced extension because of the outbreak of the virus in the cities of Lagos and Port Harcourt.The federal government had ordered schools to resume on September 22, but teachers union some states refused to return to work until they were provided with anti-Ebola kits and other logistics required to prevent the spread of the Ebola virus. The Ebola outbreak in Nigeria is almost over, US health officials said on October 7, in a rare sign of authorities turning the tide on the highly contagious disease that has killed more than 3,000 in West Africa. AFP PHOTO/PIUS UTOMI EKPEI (Photo credit should read PIUS UTOMI EKPEI/AFP/Getty Images)
A teacher ckecks body temperature of pupils for the Ebola virus at a school in Lagos on October 8, 2014. Public and private schools in at least 11 states of the country resumed academic activities on October 8 in compliance with the directive of state governments and respective chapters of the Nigeria Union of Teachers (NUT) after an enforced extension because of the outbreak of the virus in the cities of Lagos and Port Harcourt.The federal government had ordered schools to resume on September 22, but teachers union some states refused to return to work until they were provided with anti-Ebola kits and other logistics required to prevent the spread of the Ebola virus. The Ebola outbreak in Nigeria is almost over, US health officials said on October 7, in a rare sign of authorities turning the tide on the highly contagious disease that has killed more than 3,000 in West Africa. AFP PHOTO/PIUS UTOMI EKPEI (Photo credit should read PIUS UTOMI EKPEI/AFP/Getty Images)
Health officials takes the body temperature of an Ukrainian sailor on the MV Pintail ship, as they check for signs of the Ebola virus at the Apapa Sea Port, in Lagos, on September 29, 2014. Health officials have begun the screening of cargo ship crews transiting through the ports of Nigeria to prevent cross border transmission of Ebola through sea and cargo ports. Nigeria has cleared all patients under surveillance for the Ebola virus, the federal health ministry said on September 24, 2014. 'There is nobody again under surveillance for the Ebola virus in any part of Nigeria. All those under surveillance have completed their mandatory 21-day period stipulated by the WHO,' ministry's spokesman Dan Nwomeh told AFP, referring to the World Health Organization. PHOTO/PIUS UTOMI EKPEI (Photo credit should read PIUS UTOMI EKPEI/AFP/Getty Images)
MV Pintail Ukrainian sailor Levgeny Sarayev uses a T-shirt to make a face mask as Nigerian health workers onboard check for signs of the Ebola virus at the Apapa Sea Port, in Lagos, on September 29, 2014. Health officials have begun the screening of cargo ship crews transiting through the ports of Nigeria to prevent cross border transmission of Ebola through sea and cargo ports. Nigeria has cleared all patients under surveillance for the Ebola virus, the federal health ministry said on September 24, 2014. 'There is nobody again under surveillance for the Ebola virus in any part of Nigeria. All those under surveillance have completed their mandatory 21-day period stipulated by the WHO,' ministry's spokesman Dan Nwomeh told AFP, referring to the World Health Organization. PHOTO/PIUS UTOMI EKPEI (Photo credit should read PIUS UTOMI EKPEI/AFP/Getty Images)
ISTANBUL, TURKEY - SEPTEMBER 25: Medics carry a Nigerian patient Fabian Chiman Egeolu, suspected of being infected with the Ebola virus, during his transfer to another hospital in Istanbul, Turkey on September 25, 2014. (Photo by Metin Pala/Anadolu Agency/Getty Images)
FILE - In this Monday, Aug. 4, 2014, file photo, a Nigerian health official uses a thermometer on a worker at the arrivals hall of Murtala Muhammed International Airport in Lagos, Nigeria. (AP Photo/Sunday Alamba, File)
A teacher uses a thermometer to test students' temperature checking for signs of Ebola virus at Aiyetoro African Church Nursery and Primary school in Lagos, Nigeria, Wednesday, Oct. 8, 2014. Spotting symptoms early is a key factor in treating victims of Ebola, and in arresting the spread of this extremely contagious disease, according to health experts. (AP Photo/Sunday Alamba)
A Nigerian port health official uses a thermometer to screen Muslim pilgrims for Ebola at the Hajj camp before boarding a plane for Saudi Arabia at the Murtala Muhammed International Airport in Lagos, Nigeria Thursday, Sept, 18. 2014. ( AP Photo/Sunday Alamba)
Nigerian port health officials uses a thermometer on a worker at the arrivals hall of Murtala Muhammed International Airport in Lagos, Nigeria, Wednesday, Aug. 6, 2014. A Nigerian nurse who treated a man with Ebola is now dead and five others are sick with one of the world's most virulent diseases, authorities said Wednesday as the death toll rose to at least 932 people in four West African countries. (AP Photo/Sunday Alamba)
A Nigerian health official wearing a protective suit waits to screen passengers at the arrivals hall of Murtala Muhammed International Airport in Lagos, Nigeria, Monday, Aug. 4, 2014. Nigerian authorities on Monday confirmed a second case of Ebola in Africa's most populous country, an alarming setback as officials across the region battle to stop the spread of a disease that has killed more than 700 people. (AP Photo/Sunday Alamba)
of
SEE ALL
BACK TO SLIDE
SHOW CAPTION +
HIDE CAPTION


More on AOL.com:
Police: 10 dead in bomb attack on UN bus in Somalia
Malta to bury 24 victims of latest shipwreck tragedy
Republican Graham says '91 percent' chance he'll run for president
Authorities: Terrorism probe yields 6 arrests in 2 states

Read Full Story

People are Reading