Legionella pneumophila Bacteria, LM


Silver-stained micrograph of a lung tissue specimen revealed the presence of Legionella pneumophila bacteria. The specimen was taken from a victim of the 1976 Legionnaires' disease outbreak in Philadelphia. Outbreaks of legionellosis have occurred after persons have breathed mists that come from a water source (, air conditioning cooling towers, whirlpool spas, showers) contaminated with Legionella sp. bacteria. Persons may be exposed to these mists in homes, workplaces, hospitals, or public places. Legionellosis is not passed from person to person, and there is no evidence of persons becoming infected from auto air conditioners or household window air-conditioning units.


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