Positive clinical experience with paromomycin sulfate in treatment of Balantioides coli (=Balantidium coli) natural infection in zoo‐kept Mandrill monkeys (Mandrillus sphinx) and Western lowland gorillas (Gorilla gorilla gorilla)

Abstract Balantioides coli (=Balantidium coli), a large ciliated protozoan, is reported in multiple free‐ranging and captive primate species, often in association with a clinical presentation that requires medical intervention. This report describes the clinical effectiveness of paromomycin sulfate against B.coli in zoo‐kept mandrill monkeys ( Mandrillus sphinx, at orally doses of 8–31 mg/kg, once daily (SID) for 7 days) and gorillas ( Gorilla gorilla gorilla , at orally doses of 1.4–3.1 mg/kg, SID for 5 days).