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23 Countries Are At Risk of Ebola Transmission by Bats

Jul 15, 2016 03:22 AM EDT
Ebola Epidemic Over, Liberia's West Point Slum Struggles On
MONROVIA, LIBERIA - FEBRUARY 10: A water tank for washing hands stands in front of a municipal center in the West Point slum on February 10, 2016 in Monrovia, Liberia. The school was cleaned and refurbished following the epidemic. West Point, the most impoverished and overpopulated community in Liberia, was hard hit by the Ebola outbreak. After almost two years, on January 14, 2016 the World Health Organization declared the epidemic over, after the virus had killed some 11,300 people and infected more than 28,500 people in West Africa.
(Photo : John Moore/Getty Images)

A recent study reveals that 23 countries remain at risk of Ebola.

While the Ebola outbreak, which began in West Africa in 2013, is currently under control, 23 countries remain "environmentally suitable" for animal-to-human transmission of the virus, the study said.

According to the researchers from the Institute of Health Metrics and Evaluation (IHME) at the University of Washington in Seattle, seven of the countries identified have already experienced cases of Ebola, but the other 16 countries are still unaware of the regions of suitability and may be unprepared for future outbreaks.

The study, which was published in the journal eLife, is an update on a 2014 study that created a zoonotic niche map used in identifying regions where the virus could be transmitted from animals to humans.

Alongside this study, IHME also launched a new online data visualization tool that can be viewed by stakeholders and the public.

"The visualization tool provides an important way for various end users to engage and interrogate these updated maps," Dr. David Pigott, assistant professor at IHME and study lead author, said in a press release.

"Unlike with the previous publication, anyone can now directly interact with the maps, use the tool, and better assess the potential threat that Ebola virus disease poses to their regions of interest," Pigott said.

The new geospatial mapping tool allows users to view previous Ebola index cases and explore the areas where bat species capable of transmitting the virus are living.

The maps are displayed in a 5-by-5 km grid across Africa, which allows users to zoom into their countries to view their areas.

According to the new analysis from the revised map, regions predicted to be environmentally suitable for animal-to-human Ebola transmission include Cameroon, Gabon, Republic of Congo and mainland Equatorial Guinea. Regions of Central Africa identified to be most environmentally suitable in previous analysis remain so in the new analysis.

Ebola viruses are found in several African countries and outbreaks have appeared sporadically in Africa after its discovery in 1976 in the Democratic Republic of the Congo. Symptoms include fever, severe headache, fatigue, diarrhea and unexplained bleeding and bruising among others.

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