Child mortality has hit a historic low around the world — fewer then 5 million deaths a year. But experts believe that millions more could be saved by relatively cheap, simple interventions.

In sub-Saharan Africa, women are at high risk of contracting HIV. Some protective measures carry a stigma but this device enables them to take control without anyone knowing.

A new U.N. report shares data points about the world's child mortality rate. We interviewed a doctor in Nigeria — where rates of child death are among the world's highest — to offer his insights.

It's also the first vaccine against a parasitic disease in humans. But there are issues to consider, from its rate of effectiveness to the dosage schedule.

For the first time, scientists have shown that a new kind of genetic engineering can crash populations of malaria-spreading mosquitoes.

The case count — and death toll — during the pandemic have been surprisingly low. And last Sunday, people were out and about in Nairobi's parks. Researchers are trying to figure out what happened.