California health officials are on high alert following confirmed tuberculosis exposures at various schools, as the number of cases of this serious infectious disease continues to rise throughout the state.
In Fresno County, a cluster was identified at Justin Garza High School, where one active case was reported. However, it remains unclear whether this case involves a student or staff member.
Officials have reassured the community that, at present, there are no contagious individuals on campus. Still, 22 out of 169 people who were exposed have tested positive for the infection, although they currently show no symptoms.
Health officials are collaborating with the school to conduct contact tracing and testing, emphasizing the importance of anyone feeling unwell to remain at home.
Symptoms of tuberculosis can include coughing up blood, a persistent cough lasting more than three weeks, fatigue, and unintentional weight loss.
This bacterial disease primarily affects the lungs and can manifest in both active and dormant forms.
Additionally, San Diego County reported a potential TB exposure at Sunset Elementary School in San Ysidro, with exposure dates ranging from July 5 to October 21.
The health department is actively working with the school district to notify families and staff, providing free TB screenings to those who might be at increased risk.
It’s worth noting that tuberculosis is airborne, spreading when someone with the disease coughs, speaks, sings, or breathes.
County Public Health Officer Sayone Thihalolipavan remarked that symptoms of active tuberculosis include a persistent cough, fever, night sweats, and unexplained weight loss.
Thihalolipavan added that most people exposed do not become ill immediately; many may have a latent TB infection that can develop into active disease later if untreated.
For anyone concerned about exposure, blood tests and skin tests can effectively diagnose an infection.
In recent years, San Diego County has seen a steady increase in TB cases, from 193 in 2020 to 265 in 2025.
These recent school exposures reflect a concerning trend across California.
