Influenza

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

We need to do more to ensure older adults—including those living in long-term care facilities—are up to date on recommended vaccines

Two people have tested positive for avian influenza after being exposed to cows thought to be infected with the virus

Scientists are watching closely to see whether avian influenza will reach Antarctica before this year’s penguin chicks disperse for the season

The pandemic early exposed weaknesses in CDC’s laboratories. Organizational and culture changes there are good first steps, but more must be done

Experts weigh in on how you can navigate social gatherings and travel as respiratory illnesses rise this winter

Snotty, stuffy noses are the hallmark of cold and flu season, but some medications and at-home remedies may offer relief

The CDC is emphasizing how the flu vaccine can turn the virus from “Wild to Mild”