People should stay clear of the water and the wet sand from Ballona Creek to one mile north of Venice Beach and one mile south of Dockweiler, the Los Angeles County Public Health Department said in a news release.
It emerged as a powerful tool for public health officers during the COVID-19 pandemic.
But wastewater surveillance — the testing of sewage for signs of pathogens — has yet to be employed in the tracking of H5N1 bird flu virus.