Monkeypox is overwhelmingly diagnosed among gay men and their sexual networks

How a polio case in the United States affects global eradication efforts

Five years ago, Dr. Dimie Ogoina saw perhaps the most important patient of his career

The Times identified hundreds of airstrips that bring criminal mining operations to the most remote corners of the Amazon

Both deaths, in young men, are thought to be the first confirmed fatalities from the virus in Europe since the latest outbreak began