Bird flu has infected nearly 70 people in the U.S., with one death, since last April. Most of those infections have been among farmworkers exposed to infected poultry or cows. The CDC report said the virus was found in three out of 150 veterinarians who were tested in September 2024.

Blood testing of large-animal veterinarians suggests that H5N1 bird flu has spread more widely than US surveillance of the virus is capturing, according to a new study by federal and state disease detectives.