Ebola

Undetected Ebola infections suggest the disease spread more widely than thought

Undetected Ebola infections suggest the disease spread more widely than thought

As many as 25% of those infected with the Ebola virus during the recent four-year outbreak in West Africa may have experienced few if any symptoms and lived on without ill effects, new research suggests. Indeed, the immune systems of these people — the telltale sign of their infection — would allow them to withstand reinfection with the Ebola virus.

That finding has emerged from a study that tested 187 men, women and children in the rural village of Sukudu, Sierra Leone, where 28 of the West Africa outbreak’s roughly 11,000 Ebola...

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