But vaccination could put poultry meat exporters (whose birds are genetically less susceptible to H5N1 than laying hens) at risk of losing billions of dollars in international trade deals.

This sounds like maybe a good time to start looking for a more-resistant crossbreed between meat and egg chickens. I mean, it probably doesn’t take long to make up for some loss in egglaying production from a hybrid breed if we’re losing massive numbers of chickens on a regular basis.