CAROL AND MIKE WERNER / SCIENCE PHOTO LIBRARY CAROL AND MIKE WERNER / SCIENCE PHOTO LIBRARY
Labelled illustration of Pertussis (Whooping cough). Microscopic droplets carrying the bacterium Bordetella pertussis are inhaled. The bacteria adhere to cilia of epithelial cells lining the throat, where they reproduce, then migrate toward epithelial cells in the lungs. There they produce a toxin which paralyzes the celia and destroys the cells. The toxin released in the lungs spreads throughout the body. Pneumonia may develop if alveoli in the lungs are infected.
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