The Southern Nevada Health District announced on Thursday that measles virus material was detected in a Clark County wastewater sample, marking the first time such a detection has occurred locally. While no confirmed measles cases have been reported among county residents, officials are using wastewater surveillance as an early-warning tool that may indicate unreported or undiagnosed cases in the community.

A follow-up sample tested negative for the virus, but public health officials are treating the initial detection as a signal that calls for precaution. Wastewater testing works by identifying genetic fragments shed by infected individuals, often before symptoms emerge or cases are formally diagnosed.

Health officials emphasized that the detection does not confirm community transmission. However, with the upcoming school year approaching, residents—especially families with school-age children—are encouraged to check their vaccination records and ensure they are current on the measles, mumps, and rubella (MMR) vaccine.

Measles is a highly contagious illness transmitted through airborne particles from coughing or sneezing. Early signs include fever, cough, runny nose, and red eyes, followed by a facial rash that typically spreads downward. Individuals experiencing symptoms should avoid contact with others and contact their healthcare provider before visiting clinics or hospitals to reduce potential exposure to others.

Clark County has not reported a resident case of measles since 2018. A visitor-related exposure in April 2024 did not result in any local infections.

Original Source: KTNV Las Vegas

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