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The patients were not treated and were followed up for 12 to 29 months (mean 21.6 months), during which period none developed symptoms that could be attributed to E histolytica. Spontaneous loss of the parasite occurred in 17 patients, some of whom later became reinfected. Sixteen patients had antibody to human immunodeficiency virus, and infection with E histolytica showed the same benign course in them as in the patients who did not have antibody. Throughout the study classification of the isolates of E histolytica consistently showed that they belonged only to non-pathogenic zymodemes. The findings provide further evidence that E histolytica in homosexual men is a commensal organism.<\/jats:p>","DOI":"10.1136\/bmj.297.6649.654","type":"journal-article","created":{"date-parts":[[2009,4,2]],"date-time":"2009-04-02T15:19:55Z","timestamp":1238685595000},"page":"654-657","source":"Crossref","is-referenced-by-count":54,"title":["Outcome of untreated infection with Entamoeba histolytica in homosexual men with and without HIV antibody."],"prefix":"10.1136","volume":"297","author":[{"given":"E.","family":"Allason-Jones","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"A.","family":"Mindel","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"P.","family":"Sargeaunt","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"D.","family":"Katz","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[1988,9,10]]},"reference":[{"key":"ref_1","first-page":"375","article-title":"Epidemic of amoebiasis and giardiasis in a biased population","volume":"55","author":"Kean, B.H.; William, D.C.; Luminais, S.K.","year":"1979","unstructured":"Kean BH, William DC, Luminais SK. 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