Yellow Fever — Worldwide/Unknown
There is no cure for yellow fever [YF], but immunizing broad swaths of the population — at least 70 per cent in at-risk areas — effectively thwarted outbreaks of the mosquitoborne disease after the vaccine was introduced in the 1930s.
That control is now threatened, thanks to lapses in immunization coverage. Currently, there are an estimated 200 000 yellow fever cases annually, with 30 000 deaths. Africa, which contains 14 of the 17 high-risk countries, shoulders 90 per cent of the
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