To assess Cryptosporidium infections among wild animals in a zoo located in Anhui province, we conducted an investigation on the fecal samples collected from 44 primates, 41 herbivores, 44 carnivores and omnivores, and 103 birds in the zoo with the use of Sheather's sugar flotation technique and modified acid-fast staining. Cryptosporidium oocysts were detected in the fecal samples from six primates, two herbivores, four carnivores and omnivores, and seven birds by using Sheather's sugar flotation technique; the prevalence of Cryptosporidium infection in primates, herbivores, carnivores and omnivores and birds was 13.64, 4.88, 9.09, and 6.80%, respectively. Modified acid-fast staining detected the presence of Cryptosporidium oocysts in the fecal samples of one primate, three herbivores, 0 carnivores and omnivores, and one bird, and the prevalence of Cryptosporidium infection in primates, herbivores, carnivores and omnivores and birds was 2.27, 7.32, 0.00, and 0.97%, respectively. Polymerase chain reaction–restriction fragment-length polymorphism (PCR-RFLP) and phylogenetic analysis with the use of the neighbor-joining (NJ) method based on the aligned partial small-subunit (SSU) rRNA gene sequences showed that the protozoan pathogen isolated from primates was Cryptosporidium hominis and the pathogen isolated from camels (Camelus dromedarius) was Cryptosporidium andersoni. Subtyping the Cryptosporidium hominis by 60-kDa glycoprotein (GP60) gene phylogenetic analysis showed the Cryptosporidium hominis belongs to the subtype IdA and IbA.
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