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Mycobacterium infection

Mycobacterium scrofulaceum is widely distributed in nature. It is characterized by the production of yellow pigment in the dark by tissue culture. It produces colonies on Roche medium at 30 ℃ and 37 ℃ for 2 ~ 3 weeks, and does not grow below 25 ℃. If cultured at 37 ℃ for 3 days and then at 25 ℃, it can grow rapidly, and the pathogenesis is not exact. The clinical manifestation is granulomatous nodule 10 days to several months after trauma, which can also show erysipelas like appearance. The damage is often single, without systemic symptoms. Acid fast bacilli culture and strain identification can be used for diagnosis. Self healing. Antibiotic and vaccine treatment can speed up the recovery.


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