Epidemiology

Although most experts say bird flu is not an immediate threat to humans, efforts are underway to produce vaccines for H5N1 or another potential pandemic virus

Many repeat infections are mild, but some studies suggest people who have been infected with COVID more than once are at a greater risk of severe disease or long COVID

Concerns about Paxlovid rebound are preventing some doctors from prescribing the lifesaving drug and some high-risk patients from taking it

A new variant of the virus that causes COVID has mutations that make it more transmissible, but vaccines are still likely to protect against severe disease

Boosting vaccination rates, continuing widespread mask use and reimposing some restrictions on movement could reduce the number of deaths in China’s COVID wave

Reduced population immunity resulting from COVID precautions, and a phenomenon called viral interference, may have influenced this flu season’s early start

Your questions answered about what RSV is, how it spreads, what vaccines are on the way and who is most at risk

Tracking how SARS-CoV-2 spreads among animals could help us prepare for the next pandemic

The variants appear to sneak past the immune system, but vaccines will likely continue to hold strong

With cases declining in the U.S. and Europe, here are some scenarios of how the outbreak might play out

Uganda’s Ebola incident commander talks with Scientific American about the outbreak’s spread, the country’s response and the risk of cross-border transmission

In this episode of the COVID, Quickly podcast, we talk about why we’ve had years shaved off our average collective life since 2020. Also, we talk about “mabs” and why you might want to know what they are.