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Epidemiology of human mycobacterium bovis disease, california, USA, 2003-2011

Tuberculosis (TB) can be caused by more than one type of bacteria, one of which is . TB caused by is of particular concern because of its predilection for children and the fact that infection can be acquired from animals and food. is usually, but not exclusively, spread through consumption of unpasteurized, contaminated dairy products. The proportion of TB cases due to in has increased and the rate of TB exceeds the national average. To identify associated with TB in California, researchers reviewed surveillance records.

They found that M. Bovis TB in California has increased, exceeding the national average. They also found risk factors to be Hispanic ethnicity, extrapulmonary (outside the lungs) TB, diabetes, and other conditions that weaken the immune system (except for HIV/AIDS). Therefore, efforts to prevent M. bovis TB should focus on educating Hispanic populations and adults who have medical conditions that weaken the immune system about their risk. In addition, efforts to limit the demand and distribution of unpasteurized dairy products, which can also be associated with other foodborne diseases, should continue.

Epidemiology of Human Mycobacterium bovis Disease, California, USA, 2003-2011, Mark Gallivan, Neha Shah, Jennifer Flood, Emerging Infectious Diseases, DOI: 10.3201/eid2103.141539, published online 11 February 2015.


Source: Centers for Disease Control and Prevention (CDC)