Viruses

Frequently asked questions about how mpox spreads, who’s most at risk, and what vaccines and treatments are available

The Langya virus, which is related to the Nipah and Hendra viruses, has infected at least 35 people in China in the two years before 2021

A virologist explains how they work, who can get them and how well they prevent infection

A smallpox antiviral that’s effective against monkeypox is tied up in red tape, and gay-health advocates are pushing to make it easier to access

Earlier action by the World Health Organization and Western countries could have helped control monkeypox in Africa

An unvaccinated person became infected with the virus, which can be traced to a live, weakened virus commonly used in the oral polio vaccine abroad

The virus circulating in the current outbreak has mutated 50 times in the past four years

Testing bottlenecks and vaccine rollout problems have let the monkeypox virus spread unchecked, echoing the mistakes of the U.S. COVID response

A technique that detects coronavirus strains circulating in a community could become an early-warning system

Widely used gowns, intended to protect people, can let too much liquid seep through, new studies suggest

An infectious disease expert answers questions about how the virus spreads, what its symptoms are and how to get testing and treatment

Scientists in Thailand have established that a tabby passed SARS-CoV-2 to a veterinary surgeon—although such cases of cat-to-human transmission are probably rare