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Whooping Cough Bacteria & Vaccine, The whooping cough vaccine has saved thousands—mostly infants—since it's invention 1920. Initially created from the whole pertussis bacterium, an acellular version was created in 1981 to address fears. The accellular vaccine takes broken pieces from the bacteria to prime the bodies immune system to recognize the bacteria.

Whooping cough bacteria (Bordetella pertussis, left) and acellular vaccine (right), illustration. B. pertussis is a Gram-negative bacillus (rod-shaped bacteria). It infects the respiratory tract, producing a toxin that paralyses the hair-like cilia that line the respiratory tract and clear mucus from it. To compensate the body coughs. The acellular vaccine contains proteins from the surface of the bacteria, that prime the body’s immune system to recognize the bacteria if infected. Created for Science News Magazine.