parasitic worms ~300: protozoa >70 species
||Human Homo sapiens
||Cox FE. History of human parasitology. Clin Microbiol Rev. 2002 Oct15(4):595-612 DOI: 10.1128/cmr.15.4.595-612.2002 abstract and p.595 left columnPubMed ID12364371
|| Ashford, R. W., and W. Crewe. 1998. The parasites of Homo sapiens. Liverpool School of Tropical Medicine, Liverpool, United Kingdom.
||Abstract: "Humans are hosts to nearly 300 species of parasitic worms and over 70 species of protozoa, some derived from our primate ancestors and some acquired from the animals we have domesticated or come in contact with during our relatively short history on Earth." P.595 left column: "During our relatively short history on Earth, humans have acquired an amazing number of parasites, about 300 species of helminth worms and over 70 species of protozoa (primary source). Many of these are rare and accidental parasites, but we still harbor about 90 relatively common species, of which a small proportion cause some of the most important diseases in the world, inevitably, these are the ones that have received the most attention."