50.4 MB (50.0 MB compressed)
5111 x 3449 pixels
43.2 x 29.2 cm ⏐ 17.0 x 11.5 in (300dpi)
AMI IMAGES / SCIENCE PHOTO LIBRARY AMI IMAGES / SCIENCE PHOTO LIBRARY
Legionella bacteria. Coloured light micrograph of Legionella pneumophila bacteria, the cause of Legionnaires' disease. This rod-shaped, Gram-negative bacillus was first identified as a disease agent after a mysterious outbreak of pneumonia killed 29 American Legion members in 1976. It was found living in water tanks, showerheads and air-conditioning systems. The disease is contracted by inhaling airborne water droplets containing the bacteria. It causes fatal pneumonic lung disease in the elderly and unfit.
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