https://www.siliconvalley.com/2024/12/22/qa-why-finland-is-vaccinating-farmers-against-bird-flu-but-california-isnt-and-more-info-about-the-spreading-virus/

Faced with the rapid spread of avian flu through California dairies, health officials are now doing weekly testing of every dairy farm in the state — expanding initial efforts amid new evidence that some infections are going undetected and there may be unknown paths of transmission.

But farmworkers are not being vaccinated, unlike workers at poultry and fur farms in Finland. Why not?