
Possible MDR-TB exposure at CSU San Marcos campus and Sprinter prompts health alert
San Diego County health officials warn of potential exposure to multidrug-resistant tuberculosis (MDR-TB) linked to California State University San Marcos between Dec. 15, 2025 and May 14, 2026, with additional brief exposures on the North County Transit District Sprinter on May 18, 20, 26, and 27, 2026. If you may have been exposed, contact the County TB Prevention and Care Program for screening (call 619-692-8621). TB can be latent or active; early testing and treatment are important. MDR-TB is more challenging to treat but curable with the right medications. County TB cases have risen in recent years; callers can learn more from public health officials.













