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Isolation of Mycobacterium mucogenicum from street-vended chili sauces: a potential source of human infection.

Recently human illnesses due to nontuberculous mycobacteria (NTM) have increased worldwide, but the sources of transmission have not been well established. Street-vended food is widely consumed in Mexico, and chili sauces are the most typical dressings for this food. Thus, we examined street-vended chili sauces as a possible source for NTM. Fifty-one street-vended chili sauces were collected in different areas of Mexico City during the spring of 2007. NTM were recovered from 6% (3 of 51) of samples, and in all cases the identified species was Mycobacterium mucogenicum. This mycobacterium has been associated with human illness; therefore, street-vended chili sauces are a potential source of NTM infection.