Three types of parasites can cause disease in humans. They are protozoa, carried by mosquitos, helminths, such as roundworm, and ectoparasites, for instance lice and bed bugs. Parasites are organisms ...
Screwworms are flesh-eating parasites that hatch in open wounds and burrow into skin. Left untreated, they can be deadly. The majority of cases are in livestock. A Maryland resident who traveled from ...
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