Ebola cases rise in Guinea, Sierra Leone: WHO

Protective gloves are pictured at the Donka Ebola treatment center on May 2, 2015 in Conakry, Guinea.  Ebola has spread further in Guinea and Sierra Leone, with 36 cases in the past week, four times as many cases as the week before, the World He
Protective gloves are pictured at the Donka Ebola treatment center on May 2, 2015 in Conakry, Guinea.  Ebola has spread further in Guinea and Sierra Leone, with 36 cases in the past week, four times as many cases as the week before, the World Health Organization (WHO) said on Tuesday, May 19. -- PHOTO: AFP

GENEVA (REUTERS) - Ebola has spread further in Guinea and Sierra Leone, with 36 cases in the past week, four times as many cases as the week before, the World Health Organization (WHO) said on Tuesday.

The findings were a reminder that "this virus will not go quietly and it will take an extraordinary effort to finish the job," the WHO's special representative for Ebola, Bruce Aylward, told a technical briefing attended by health ministers.

"With the start of the rainy season today, the doubling of effort will be that much more difficult, that much more important," he added.

Liberia was declared Ebola-free earlier this month.