The Centers of Disease Control and Prevention (CDC) have warned doctors that flu vaccines may not be effective against the most common strain of flu circulating in the U.S..
According to Reuters, the U.S. health agency issued an advisory to doctors Wednesday saying that of the flu samples they had taken between October 1 and November 22, less than half were good matches for the current flu shots.
The flu shots will still protect against certain strains of the flu, and can help reduce the risk of complications even among the strains that have mutated.
[Reuters]
More Must-Reads From TIME
- Jane Fonda Champions Climate Action for Every Generation
- Biden’s Campaign Is In Trouble. Will the Turnaround Plan Work?
- Why We're Spending So Much Money Now
- The Financial Influencers Women Actually Want to Listen To
- Breaker Sunny Choi Is Heading to Paris
- Why TV Can’t Stop Making Silly Shows About Lady Journalists
- The Case for Wearing Shoes in the House
- Want Weekly Recs on What to Watch, Read, and More? Sign Up for Worth Your Time
Write to Tessa Berenson at tessa.Rogers@time.com