Influenza

Flaws in the CDC's H5N1 test highlight the risks of relying on a single test supplier, some experts say

Virologists say that the bird flu strain that is infecting cattle in the U.S. is unlikely to cause a pandemic in humans, but countries are gathering vaccines and stepping up surveillance just in case

Finland has decided to vaccinate farmworkers against bird flu—and experts say the U.S. should do the same

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