Liberia is
to be declared Ebola-free by the World Health Organization (WHO), effectively
putting an end to the world's worst outbreak of the disease.
The
"end of active transmission" will be declared, after 42 days without
a new case in Liberia.
It joins
Guinea and Sierra Leone, which earned the status last year.
However,
UN chief Ban Ki-moon has warned that West Africa may see flare-ups of the
virus. It has killed more than 11,000 people since December 2013.
A country
is considered free of human-to-human transmission once two 21-day incubation
periods have passed since the last known case tested negative for a second
time.
However,
the end of active transmission of Ebola has been declared twice before in
Liberia - only for the infection to re-emerge.
This is
why the expected declaration by WHO later today will be marked with
caution.
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