Africa

The World Health Organization, on advice of experts, holds back from sounding loudest public health alarm

Long-acting treatments now in clinical trials may work as preventatives, too

New genetic study suggests Plasmodium vivax hitched a ride with early human migrants

International help ramps up as virus continues to spread in two provinces

A Q&A with Peter Salama, leader of the World Health Organization’s response team

Inoculations showed promise in curbing previous outbreak, but proof lacking

Traditional containment strategies potentially boosted by new tool, but it’s difficult to untangle why deadly virus stopped spreading

Vaccine-derived virus spreads despite emergency response

Young researchers champion good conduct and push for offenders to be punished

MeerKAT will form part of the multicontinent Square Kilometre Array

Drinking cheap alcohol linked to drop in foragers’ fertility

Mother-to-child transmission of HIV can be easily prevented, but in this country many pregnant women don’t even know they are infected

Democratic Republic of the Congo outbreak raises tricky questions about sampling blood from study volunteers

Advisory committee says there’s no “significant” threat yet of cross-border spread

The Hadza of Tanzania have long been a magnet for researchers, but their traditional lifestyle is vanishing

Poop may be starving pools and rivers of oxygen