It’s just more propaganda to try and do same crap again. It’s not necessary to kill all chickens (in fact I read somewhere that could make it worse) they’re intentionally culling food supply to raise prices and panic. Farms all over where I live- everyone is perfectly fine including the chickens.
They’re gearing up to try to jab all our livestock.
But chickens offer this cautionary tale on that:
https://www.pbs.org/newshour/science/tthis-chicken-vaccine-makes-virus-dangerous