Time: 2024-06-30
Signs of bird flu have been detected in San Francisco wastewater, although officials are unclear on their origin. According to sampling data, the H5N1 bird flu virus was found at three wastewater sites in California's Bay Area. Positive wastewater samples have been discovered in seven other states, with California being the only one yet to report a bird flu outbreak in a herd of dairy cows.
Genetic evidence of bird flu was identified in San Francisco wastewater on June 18 and June 26. Additional H5 "hits" were observed at a site in Palo Alto on June 19, and another on June 10 from the West County Wastewater facility in Richmond. The San Francisco Department of Public Health, in collaboration with federal, state, and local partners, is closely monitoring the situation and is aware of the recent detections of H5N1 fragments in San Francisco's wastewater.
The virus has been found in 133 dairy herds across 12 states, including wild birds and domestic poultry flocks throughout the United States. California is the only one of these states that has not reported H5N1-infected cattle. Recent weeks have also seen the detection of H5 in wastewater samples in Idaho, among other states.
The finding of H5N1 bird flu virus in San Francisco wastewater has raised concerns due to its urban origin. Devabhaktuni Srikrishna, an entrepreneur specializing in disease detection, has expressed worry over the detection, noting that there are not many dairy or animal farms in San Francisco, Palo Alto, or Richmond.
The state of California is working in conjunction with the Centers for Disease Control and Prevention to investigate the issue of Avian influenza in wastewater. While there is currently no immediate threat to the general public from the detection of H5 in wastewater, health officials stress the importance of understanding the recent findings as much as possible to prevent any potential outbreak.