Bird flu in US dairy cows spreads to 11 states

An outbreak of bird flu in US dairy cows has spread to 11 states, with over 80 dairy herds and three workers affected. The virus, H5N1, poses a low risk to humans but has potential for adaptation. A case in Mexico marks the first human infection with H5N2 globally. The virus can spread through various routes, including cow-to-human transmission. The US is preparing 4.8 million doses of a vaccine.