title: Health crusades and tropical diseases.
abstract: Worldwide attempts to eradicate yaws, malaria, and smallpox have all been effective to varying extents, and all have taught some valuable lessons that should be taken into account as a new global crusade is mounted against tropical diseases. But it should not be forgotten that infectious disease remains a major public health problem in the U.S., and new diseases are arising to replace those already vanquished.
mesh_terms: D006801:Humans; D008288:Malaria / Q000517:prevention & control*; D012899:Smallpox / Q000517:prevention & control; D014330:Tropical Medicine; D015001:Yaws / Q000517:prevention & control*