Human Adaptation to the Parasitic Environment.

  title={Human Adaptation to the Parasitic Environment.},
  author={S F Dudley},
  journal={Proceedings of the Royal Society of Medicine},
  volume={22 5},
  • S F Dudley
  • Published in Proceedings of the Royal Society of Medicine
Man, in contact with the pathogens in his environment, responds by developing immunity with or without symptomatic illness. The incidence of infectious disease in a community depends on the parasitic factor or "infection pressure," and the host factor, "herd immunity," i.e., the resistance of the community as a whole to the infection. Environment is only a secondary factor which alters the relative values of the two primary factors. Morbidity varies directly as the "infection pressure," and… CONTINUE READING