|Contribution||Reported Balantidium coli as pathogenic in human intestine.|
|Notes||Petr Henrik Malmsten. Although not mention by Garrison, Malmsten concluded that the protozoon causes illness when present in large numbers. Detailed case reports. Foster (1965), perhaps referring to a preliminary observation, gives date as 1856, mentions a single case of severe diarrhea, and says the organism was Paramoecium-like but probably Balantidium coli.|
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