Viruses

As the measles outbreak in the U.S. gets bigger, HHS’s secretary Robert F. Kennedy, Jr., touts nonvaccine treatments. But they generally don’t help and can carry dangers

A shameful mass propaganda campaign is unfolding in the U.S., one that will make millions of kids needlessly sick with measles

A team of researchers traced the wild animal source of the mpox virus to the fire-footed rope squirrel

The detection of bird flu in a sheep is another sign that the H5N1 virus is adapting to hop to new hosts

After 150,000 articles and 17 million genome sequences, what science has taught us about SARS-CoV-2

Low vaccination rates and undetected infections are driving the measles outbreak in West Texas

With hospitalizations and at least nine confirmed cases, health officials race to contain a growing outbreak in a community with low vaccination

Bird flu is infecting more people than we think. We need to stop it now before a new pandemic begins

COVID levels may have peaked but flu is still high; RSV is on the way out

A common respiratory virus called human metapneumovirus, or HMPV, has been spreading in some countries in Asia, including China, India, Malaysia and Kazakhstan. Here’s what we know

In a new book, a science journalist recounts the story of a lifesaving treatment for infection that scientists broadly dismissed until recently

A mixture of colder temperatures, lower humidity and more time spent indoors could explain the uptick in cold viruses during the winter holidays