Viruses

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

We need targeted public health interventions to reduce transmission from asymptomatically infected individuals. Like COVID, silently spreading pathogens can lead to far more infections and fatalities

Wastewater in several Californian cities, including San Francisco and Los Angeles, recently tested positive for bird flu. But understanding disease risk and exposure to humans isn’t so straightforward

Analysis of a strain of the virus circulating in Central Africa shows genetic mutations indicative of sustained human-to-human spread