Influenza

The first large trial of a COVID and flu vaccine combo suggests it boosts immune protection even more than single-target shots

The FDA has authorized just one type of avian flu test, and it is only available to livestock workers

H5N1 is running rampant through dairy cows, putting humans at risk of an epidemic

Three U.S. dairy workers have been infected with H5N1 after contact with sick cows, and all of them developed eye symptoms

Detecting bird flu signs in dairy cows sooner could have helped staunch the virus's spread

The pasteurization process was invented in the 1860s and continues to keep people safe from a range of foodborne illnesses

The H5N1 virus is a long way from becoming adapted to humans, but limited testing and tracking mean we could miss danger signs

The U.S. government has a stockpile of H5N1 vaccines, and several companies could make millions more if needed. But scaling up the supply could take time

Understanding how avian influenza jumped into cows can help shape the path to stopping the virus’s spread

Four years after a mysterious respiratory virus jumped from animals into humans and launched the COVID pandemic, wary epidemiologists are keeping a close eye on a strain of avian influenza that is spreading among U.S. dairy cows

Genomic analysis suggests that the outbreak probably began in December or January, but a shortage of data is hampering efforts to pin down the source

H5N1 influenza virus particles have been detected in commercially sold milk, but it’s not clear how the virus is spreading in cattle or whether their milk could infect humans