title: Prevalence of Balantidium coli Infection in Bred Rhesus Monkeys (Macaca mulatta) in Guangxi, southern China.
abstract: BACKGROUND
  Balantidium coli infects humans, primates and pigs, causing serious diarrhea and dysentery. Little information on the prevalence of B. coli in primates is available in China. This investigation was conducted to determine the prevalence of B. coli infection in bred rhesus monkeys in Guangxi Zhuang Nationality Autonomous Region (GZNAR), southern China.
  
  
  METHODS
  A total of 120 fecal samples were collected from rhesus monkeys bred in cages in GZNAR and B. coli cysts and/or trophozoites were examined microscopically after sedimentation with water in May 2013.
  
  
  RESULTS
  (64.2%) samples were tested positive. The prevalence was 65% (39/60) and 63.3% (38/60) in female and male monkeys, respectively. 80% (48/60) cages in this nonhuman primate center were positive for B. coli.
  
  
  CONCLUSIONS
  The present survey revealed high circulation of B. coli in bred rhesus monkeys in GZNAR, which poses potential threats to animal and human health.
authors: School of Basic Medicine, Dali University, Dali, China.
authors: Hai Long
authors: HL
authors: Li
authors: School of Basic Medicine, Dali University, Dali, China.
authors: Qian
authors: Q
authors: Li
authors: School of Basic Medicine, Dali University, Dali, China.
authors: Ling
authors: L
authors: Dong
authors: Institute of Veterinary Medicine, Guangdong Academy of Agricultural Sciences, Guangzhou, China.
authors: Juan
authors: J
authors: Li
authors: College of Animal Science and Technology, Yunnan Agricultural University, Kunming, China.
authors: Feng Cai
authors: FC
authors: Zou
authors: School of Basic Medicine, Dali University, Dali, China.
authors: Li
authors: L
authors: Zhang
keywords: Balantidium coli; Rhesus monkeys; Southern China
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