Bird flu detected in sheep in UK for first time / New carrier birds brought avian flu to Europe and the Americas / Bird flu infections in dairy cows are more widespread than we thought, according to a new CDC study / Dead birds found on New York beach believed to have died from avian flu / 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