Measles emerges in California wastewater as health experts sound alarm

Article excerpt

California health officials detected measles genetic material in routine wastewater testing in Merced County, signaling potential undetected spread even as no confirmed cases have yet surfaced locally. The discovery arrives amid a sharp resurgence of measles across the state, prompting public health experts to issue warnings about the disease's circulation. Wastewater surveillance, a surveillance method that caught COVID variants before clinical cases emerged, offers an early warning system for infectious disease outbreaks. Health authorities are investigating whether the pathogen indicates community transmission, raising questions about vaccination rates and disease spread in the region.