A wastewater sample from St. Mary’s County tested positive for measles virus on May 16, 2025, as part of a national pilot study by Stanford and Emory universities. This is the first instance of measles virus found in the county’s wastewater.
According to public health officials, no confirmed cases have been reported in the county, suggesting that the positive sample may indicate an isolated or undetected case. Measles is a highly contagious respiratory disease that spreads through coughing and sneezing.
The St. Mary’s County Health Department (SMCHD) is urging residents to remain vigilant for measles symptoms and ensure their vaccinations are up to date. Vaccines are available at community clinics, including the Spring Ridge and Margaret Brent School-Based Health Centers, starting July 29 and August 14, 2025.
Residents can protect themselves by staying vaccinated, practicing good hygiene, and limiting contact with others if symptoms appear. The SMCHD website offers detailed information on measles and vaccination options.
No confirmed cases have been reported in the county, but vigilance remains critical given measles’ high contagiousness. Residents are encouraged to verify their immune status with healthcare providers to ensure they are protected.
Source: https://southernmarylandchronicle.com/2025/06/04/no-measles-cases-despite-wastewater-detection