Viruses

Novavax’s protein-based vaccine is the latest FDA-authorized COVID booster available this fall. Here’s what you should know

After avian influenza killed 21 endangered California Condors, government officials are testing a vaccine that could protect the massive scavengers from infection

Global efforts to eradicate the poliovirus were recently described as unsuccessful—yet Afghanistan and Pakistan are now on the verge of eliminating it

Malaria grabs headlines, but U.S. residents are more likely to encounter West Nile virus and other mosquito-borne illnesses

Genetic susceptibilities, the environment and the body’s response to inflammation all influence our odds of falling ill

Unregulated wild animal markets increase the risk of more epidemics

Recently released data from samples of the COVID-causing virus SARS-CoV-2 at the market where many early cases of the disease occurred suggest animals were present but stop short of proving that they were infected and transmitted the virus to humans

Uncertain funding means wastewater surveillance programs could close in the future

Being infected with HIV is no longer a terminal diagnosis, but researchers are looking to fill the gaps that remain to ensure treatment reaches all who need it

Norovirus, the so-called winter vomiting disease, is making its seasonal rounds across the U.S. Here’s what you should know

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