Infections caused by the latest variant have symptoms including fever, chills, fatigue, cough, congestion and headache.

Zeno and colleagues found that over 59% of those hospitalized were older adults. However, the flu shot reduced the odds of hospitalization among older adu

This year's flu vaccine reduced the risk of hospitalization in the Southern Hemisphere but wasn't as effective as the one used in the prior season, a new CDC study found.

“The deaths of 47 tigers, three lions, and a panther at My Quynh Safari and Vuon Xoai Zoo amid Vietnam’s bird flu outbreak are tragic and highlight the risks of keeping wild animals in captivity,” PETA Senior Vice President Jason Baker said in a statement sent to The Associated Press.

Dozens of tigers have died in zoos in south Vietnam after a bird flu outbreak, according to state media. Three lions and a panther were also reported to have died of the virus alongside 47 tigers since August.