Bird flu reinfections at US poultry farms highlight need for vaccines, experts say

_{Aggressive prevention including wider changes to poultry raising needed after at least 56 US farms doubly infected}

Scores of poultry operations in the US have been reinfected by bird flu since 2022, costing hundreds of millions of dollars in federal payouts, according to documents obtained by the Guardian.

The recurring outbreaks highlight the need for more aggressive prevention, including poultry vaccination and changes to how poultry is farmed, experts say.