World Health Organization Declares End of Ebola Virus in Guinea

WHO also declared Guinea free of transmission in December.

This would be the second such declaration from the country at the epicenter of the world's worst outbreak of the disease.

The WHO had previously announced Guinea was free of transmission in December, after 42 days had passed without a positive test.

In the most recent outbreak, seven confirmed and three possible cases of the virus surfaced between March 17 and April 6 in the West African country, according to the organization.

"The flare-up seems to have occurred after a person came into contact with infected body fluid from an Ebola survivor," that statement said. "Since the virus can remain active in certain body fluids for months, the WHO cautions the risk of outbreaks remain."