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Update (June 21): The World Health Organization announced that the Ebola outbreak in Guinea is over as of June 19. Twelve people have died since the disease emerged there in February this year.
Viral genetic sequences from current Ebola cases in Guinea and from the 2014–2016 West African outbreak are almost identical, according to recent analyses, indicating that the new outbreak was triggered by someone who harbored the virus for five years or more, The New York Times reports.
Ebola cases were identified in Guinea in late January, and the country declared an outbreak on February 13. In total, 18 people have tested positive for the virus and nine people have died.
The Ebola virus can linger in the body long after a person recovers, sometimes triggering or spreading the disease if it reactivates, but about 500 days had been the longest interval on record. Given ...