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Wu S, He X, Zhang B, An L, You L, Luo S, Yang F, Pei X, Chen J. Molecular epidemiology and genetic diversity of canine coronavirus from domestic dogs in Chengdu, China from 2020 to 2021 using a multiplex RT-PCR. INFECTION, GENETICS AND EVOLUTION : JOURNAL OF MOLECULAR EPIDEMIOLOGY AND EVOLUTIONARY GENETICS IN INFECTIOUS DISEASES 2023:105463. [PMID: 37295484 DOI: 10.1016/j.meegid.2023.105463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 06/01/2023] [Accepted: 06/04/2023] [Indexed: 06/12/2023]
Abstract
Recent reports on identification of canine coronavirus (CCoV) in humans have emphasized the urgency to strengthen surveillance of animal CoVs. The fact that recombinations between CCoV with feline, porcine CoVs brought about new types of CoVs indicated that more attention should be paid to domestic animals like dogs, cats and pigs, and the CoVs they carried. However, there are about ten kinds of CoVs that infect above animals, and thus representative CoVs with zoonotic potentials were considered in this study. Multiplex RT-PCR against CCoV, Feline coronavirus (FCoV), porcine deltacoronavirus and porcine acute diarrhea syndrome coronavirus was developed to investigate the prevalence of CoVs from domestic dogs in Chengdu, Southwest China. Samples from a total of 117 dogs were collected from a veterinary hospital, and only CCoV (34.2%, 40/117) was detected. Therefore, this study focused on CCoV and its characteristics of S, E, M, N and ORF3abc genes. Compared with CoVs that are capable of infecting humans, CCoV strains showed highest nucleotide identity with the novel canine-feline recombinants detected from humans (CCoV-Hupn-2018). Based on S gene, CCoV strains were not only clustered with CCoV-II strains, but also closely related to FCoV-II strains ZJU1617 and SMU-CD59/2018. As for assembled ORF3abc, E, M, N sequences, CCoV strains had the closest relationship with CCoV-II (B203_GZ_2019, B135_JS_2018 and JS2103). What's more, specific amino acid variations were found, especially in S and N proteins, and some mutations were consistent with FCoV, TGEV strains. Altogether, this study provided a novel insight into the identification, diversification and evolution of CoVs from domestic dogs. It is of top priority to recognize zoonotic potential of CoVs, and continued comprehensive surveillance will help better understand the emergence, spreading, and ecology of animal CoVs.
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Affiliation(s)
- Shanshan Wu
- West China School of Public Health and West China Fourth Hospital, Sichuan University, 16#, Section 3, Renmin Road South, Chengdu 610041, Sichuan, China
| | - Xun He
- Chengdu Center for Disease Control and Prevention, 4#, Longxiang Road, Chengdu 610041, Sichuan, China
| | - Baochao Zhang
- West China School of Public Health and West China Fourth Hospital, Sichuan University, 16#, Section 3, Renmin Road South, Chengdu 610041, Sichuan, China
| | - Longyi An
- West China School of Public Health and West China Fourth Hospital, Sichuan University, 16#, Section 3, Renmin Road South, Chengdu 610041, Sichuan, China
| | - Lan You
- West China Tianfu Hospital, Sichuan University, 3966#, Section 2, South Second Section, Tianfu Avenue, Chengdu 610200, Sichuan, China
| | - Shuhan Luo
- West China School of Public Health and West China Fourth Hospital, Sichuan University, 16#, Section 3, Renmin Road South, Chengdu 610041, Sichuan, China
| | - Fen Yang
- West China School of Public Health and West China Fourth Hospital, Sichuan University, 16#, Section 3, Renmin Road South, Chengdu 610041, Sichuan, China
| | - Xiaofang Pei
- West China School of Public Health and West China Fourth Hospital, Sichuan University, 16#, Section 3, Renmin Road South, Chengdu 610041, Sichuan, China
| | - Jiayi Chen
- West China School of Public Health and West China Fourth Hospital, Sichuan University, 16#, Section 3, Renmin Road South, Chengdu 610041, Sichuan, China.
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The role of pets in SARS-CoV-2 transmission: an exploratory analysis. Infection 2022; 51:455-458. [PMID: 35704257 PMCID: PMC9198608 DOI: 10.1007/s15010-022-01860-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 05/19/2022] [Indexed: 11/08/2022]
Abstract
Purpose There is evidence that humans can transmit SARS-CoV-2 to cats and dogs. However, there is no evidence that they can transmit it back to humans or play any role in SARS-CoV-2 transmission. Here, we present an exploratory analysis on that matter. Methods We conducted a case–control study with participants with flu-like symptoms seeking care at a primary healthcare unit to be tested for COVID-19. They were asked if they owned pet cats and/or dogs in their residences, and this variable was evaluated as exposure. Results The odds ratio of “having dogs and/or cats in the residence” was 1.29 (95% CI 1.08–1.54) of “having only dogs and no cats” was 1.26 (1.05–1.52), and “no dogs and only cats” was 1.29 (0.95–1.75). Conclusion Having a cat/dog in the house can affect the risk of infection by SARS-CoV-2.
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