Novel study on the prevalence of Trichinella spiralis in farmed American minks (Neovison vison) associated with exposure to wild rats (Rattus norvegicus) in China.

Autor: Zhang NZ; State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Key Laboratory of Veterinary Public Health of the Ministry of Agriculture, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China., Li WH; State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Key Laboratory of Veterinary Public Health of the Ministry of Agriculture, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China., Yu HJ; School of Advanced Agricultural Sciences, Jiaxing Vocational & Technical College, Jiaxing, China., Liu YJ; State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Key Laboratory of Veterinary Public Health of the Ministry of Agriculture, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China., Qin HT; State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Key Laboratory of Veterinary Public Health of the Ministry of Agriculture, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China., Jia WZ; State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Key Laboratory of Veterinary Public Health of the Ministry of Agriculture, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China., Fu BQ; State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Key Laboratory of Veterinary Public Health of the Ministry of Agriculture, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China.; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Disease, Yangzhou, China.
Jazyk: angličtina
Zdroj: Zoonoses and public health [Zoonoses Public Health] 2022 Dec; Vol. 69 (8), pp. 938-943. Date of Electronic Publication: 2022 Aug 10.
DOI: 10.1111/zph.12991
Abstrakt: Minks and brown rats are reservoir hosts for many endoparasites including those of the genus Trichinella, a group of parasite nematodes with a worldwide distribution. However, little is known about the prevalence of Trichinella sp. infection in the American mink (Neovison vison) and rats (Rattus norvegicus) in China. Therefore, we aimed to examine the prevalence of Trichinella sp. infection in farmed minks in Weihai city, Shandong province, China and infer the possible route for Trichinella transmission to farmed American minks. In total, 289 muscle samples from minks and 102 carcasses of rats were collected from Weihai City. The appearance of Trichinella sp. was examined using the pooled artificial HCl-pepsin digestion method. The results showed that muscle larvae were detected in 20 of 289 minks (6.92%) and 2 of 102 synanthropic rats (1.96%). The larval density of Trichinella sp. in mink samples ranged from 0.025 to 0.815 larvae per gram (lpg), while the average larval burden in rats was 0.17 lpg. The isolates derived from minks and rats were identified at the species level using multiplex polymerase chain reaction (PCR), which revealed that the size of the two PCR products matched that of T. spiralis at 173 bp. Furthermore, sequence analysis showed 100% identity of the 5S rDNA inter-gene spacer regions of the two isolates to that of T. spiralis. This study presents a novel report of T. spiralis-mediated infection in minks and synanthropic rats in China. We highlight the vulnerability of farmed minks to Trichinella infection through exposure to synanthropic rats, which may raise a public health concern of potential zoonotic risks for domestic animals.
(© 2022 Wiley-VCH GmbH.)
Databáze: MEDLINE
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