Colorized transmission electron micrograph of Avian influenza A H5N1 viruses. Credit: Public Domain Signs of H5N1 bird flu virus have been detected at three wastewater sites in California’s Bay Area, according to sampling data. While positive wastewater samples have been found in seven other states, California is the only one that has yet to report a bird flu outbreak in a herd of dairy cows. Genetic evidence of bird flu was detected in San Francisco wastewater on June 18 and June 26. Additional H5 “hits” were seen at a site Read More