FRESNO, Calif. (KFSN) — Thousands of people in California are diagnosed with tuberculosis each year. Health leaders in Central California say they continue monitoring cases closely across the region.<\/p>\n
State health data show that in 2025, more than 2,100 people were infected with tuberculosis statewide.<\/p>\n
“Tuberculosis is highly contagious. It can be transferred from one person to another simply by talking, singing, coughing or sneezing. This bacteria can be transmitted from one person to another,” said Leticia Berber, a health education specialist with the Fresno County Department of Public Health.<\/p>\n
Tuberculosis typically affects the lungs and appears in two forms: active and inactive, also known as latent TB.<\/p>\n
“The latent is often referred to as like bacteria that are asleep in your body, and so you can’t get sick from it. You can’t spread it to others,” said Dr. Ignacio Santana, Merced County health officer. “Active TB, on the other hand, which is a second form, the bacteria are awake and they’re making people sick.”<\/p>\n
Health leaders in Central California say they are consistently testing and treating latent cases of tuberculosis.<\/p>\n
According to the California Department of Public Health, Fresno County reported 50 cases of tuberculosis in 2025, while Merced County reported five cases. In 2024, Fresno County recorded 52 cases and Merced County reported 11.<\/p>\n
Santana said health officials remain vigilant, adding that many tuberculosis cases originate outside the United States.<\/p>\n
“80% of the TB cases in the US are due to people who are born in a high-incidence country,” he said.<\/p>\n
Berber said Fresno County has documented 15 tuberculosis cases so far this year. Health leaders say tuberculosis can be treated, particularly when diagnosed early.<\/p>\n
“If we have a latent TB, this individual can take medication for up to three months. Every day, there is a pill to take. This treatment can take up to three to 12 months, depending on the individual’s health status,” Berber said.<\/p>\n
Active tuberculosis cases require more aggressive treatment.<\/p>\n
Health officials say recognizing symptoms early, wearing masks and undergoing screening remain the most effective ways to prevent the spread of tuberculosis.<\/p>\n
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