An article in the Candadian Medical Association Journal stated the following in its abstract: "In a controlled study 67.5% of 200 homosexual men but only 16% of 100 heterosexual men were found to be infected with intestinal [[Parasite|parasites]]"...These findings suggest that the male homosexual community may be an important reservoir of potentially pathogenic protozoa." <ref>http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1704818</ref>
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Anal sex can be an important risk factor for the relay of many diseases including intestinal parasitism. <ref>http://www.springerlink.com/content/jx13231641717w48/<ref> An article in the Candadian Medical Association Journal stated the following in its abstract: "In a controlled study 67.5% of 200 homosexual men but only 16% of 100 heterosexual men were found to be infected with intestinal [[Parasite|parasites]]"...These findings suggest that the male homosexual community may be an important reservoir of potentially pathogenic protozoa." <ref>http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1704818</ref>