Global Health

Only a fraction of the presumed cases in five countries have led to positive tests for anthrax. Some scientists say other causes cannot yet be ruled out.

By Apoorva Mandavilli

Some babies born with devastating birth defects from the mosquito-borne illness are 7 now, but Covid turned the world’s attention away.

By Stephanie Nolen and Dado Galdieri

The new agreement makes Aspen Pharmacare the first African company to market a Covid vaccine on the continent. But it stops short of allowing Aspen to make the ingredients in the vaccine.

By Stephanie Nolen

Dr. Nkengasong will be the first person of African origin to oversee the U.S. government program combating H.I.V., which has ravaged the continent.

By Apoorva Mandavilli

Researchers ended a large trial in South Africa after finding that an experimental vaccine offered little protection.

By Stephanie Nolen

Aid agencies are scrambling to get oxygen equipment to low-income countries where the coronavirus is rapidly spreading.

By Donald G. McNeil Jr.

Privately, Chinese doctors say they need outside expertise. But Beijing, without saying why, has shown no interest so far.

By Donald G. McNeil Jr. and Zolan Kanno-Youngs

After more than 30 years of research, 1.7 million people are still infected each year with the virus that causes AIDS.

By Donald G. McNeil Jr.

Rapidly rising caseloads alarm researchers, who fear the virus may make its way across the globe. But scientists cannot yet predict how many deaths may result.

By Donald G. McNeil Jr.

Stores are selling out of masks, and health care workers risk infection if they cannot get the protective gear.

By Donald G. McNeil Jr.