Bird Flu Outbreak in Cattle May Have Begun Months Earlier Than Thought It is unclear exactly how the cows became infected, but the most likely source is feces or other secretions from a wild bird infected with the virus. Read More at Source. Author: Pumilo Share this:TwitterFacebookMoreLinkedInRedditTumblrPinterestPocketTelegramWhatsAppLike this:Like Loading... Related Tags: Wild Birds April 24, 2024 by Pumilo Wild Birds 0