As international agencies respond to the emergence of the deadly yellow fever virus in Guinea, experts say they are increasingly concerned about a rise in outbreaks across Africa.
Vaccination drive in Burkina Faso (file photo). (Image: Brahima Ouedraogo/IRIN)
Africa saw 13 yellow fever outbreaks in 2008, as opposed to an average two to five per year in recent years, according to Sergio Yactayo, adviser on the World Health Organization's (WHO) yellow fever prevention team in Geneva.
