Nurith Aizenman

How Sotiris Missailidis, head of R&D in Brazil's vaccine agency, used the COVID crisis to push through a game-changing effort for middle-income countries to invent their own mRNA vaccine.

Pfizer and Moderna have refused to divulge details of how to make their cutting-edge COVID shots. Here's what two scientists — and longtime best friends — are doing about it.

Two women in Uvalde are spearheading an effort to soothe their community with food. Because Uvalde's resident's lives are so intertwined, everyone knows someone affected by the massacre.

The U.S. has pulled back funding for global vaccinations. Some countries — like Brazil — don't need the help. Vaccination rates remain low in other countries such as Iraq due to issues of mistrust.

From the start of the war in Ukraine, food policy experts have worried that a hunger crisis could be in the making, given how important Ukraine and Russia are to global food supply.

Two years after the World Health Organization declared the COVID outbreak a pandemic, the vaccination rate in poor countries remains well below global targets. But do those targets still make sense?

Both countries are huge suppliers of grains and other essential foods. And with widespread hunger and high food prices already, the war couldn't have come at a worse time.

The war in Ukraine is pushing up already record-high food prices around the world — threatening the lives of millions of people in poor countries struggling with hunger. Here's why it's not hopeless.

Dr. Paul Farmer, a global health champion, Harvard Medical School professor, anthropologist and co-founder of the nonprofit health organization Partners in Health, has died at age 62.

In the United States there's lots of discussion about when the coronavirus will finally become endemic the way colds are. But African scientists say that may have already happened on their continent.