Bird flu infections in dairy cows are more widespread than we thought, according to a new CDC study - Thousands more birds to be culled after suspected avian flu - Bird flu confirmed in older Wyoming woman who likely had contact with infected flock at her home - Wyoming woman hospitalized with bird flu virus - Tens of thousands of birds being culled over suspected avian flu - Bird flu infections went undetected in some veterinarians, CDC study says - Bird flu strain that just jumped to cows infects dairy worker in Nevada - New York temporarily shutters bird markets after seven cases of avian flu are detected in NYC - Avian flu suspected in up to 15 bird deaths at New York City zoos