Gabrielle Emanuel

After small pox was eradicated and vaccinations against the disease came to an end, people in parts of Africa started getting sick with something rarely seen before - mpox. Researchers eventually realized that with the end of smallpox vaccinations, any immunity to other pox viruses such as mpox went away. They say this helps to explain why there are historically high numbers of mpox cases in the world today.

Global pandemic treaty negotiators are hashing out cooperation plans this week and considering rushing the process out of fear that the Trump administration would pull the U.S. out of negotiations.

The Marburg virus is notable for its very high fatality rate. But in the current Marburg outbreak, in Rwanda, the fatality rate is far lower than normal.

New reports from Physicians for Human Rights and Doctors Without Borders document a "massive influx" of sexual violence in the eastern Democratic Republic of Congo. What can be done to stop it?

Marburg is one scary disease. The fatality rate can be as high as 88%. There's no approved vaccine — yet. With one of the world's largest outbreaks, Rwanda is now testing a promising new vaccine.

High levels of lead were found in a surprisingly large number of Bangladeshi kids in New York City — and in pregnant women in Bangladesh. Could there be a common cause?

The U.S. and Europe have access to mpox vaccines, but the epicenter of the current mpox crisis in the Democratic Republic of the Congo has no doses yet.

The World Health Organization declared mpox, previously known as monkeypox, a public health emergency. Cases have been surging in the Democratic Republic of Congo, and spread to nearby countries.

On Wednesday, the WHO said an outbreak of mpox in several African countries is serous enough to constitute a public health emergency of international concern.

On Tuesday, it's expected that Africa CDC will announce that Mpox is a health emergency of "continental" concern. An outbreak in the DRC has spread to four countries that have never had Mpox.