Resumen
Wildlife reservoirs of broad-host-range viruses have the potential to enable evolution of viral variants that can emerge to infect humans. In North America, there is phylogenomic evidence of continual transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) from humans to white-tailed deer (Odocoileus virginianus) through unknown means, but no evidence of transmission from deer to humans. We carried out an observational surveillance study in Ontario, Canada during November and December 2021 (n = 300 deer) and identified a highly divergent lineage of SARS-CoV-2 in white-tailed deer (B.1.641). This lineage is one of the most divergent SARS-CoV-2 lineages identified so far, with 76 mutations (including 37 previously associated with non-human mammalian hosts). From a set of five complete and two partial deer-derived viral genomes we applied phylogenomic, recombination, selection and mutation spectrum analyses, which provided evidence for evolution and transmission in deer and a shared ancestry with mink-derived virus. Our analysis also revealed an epidemiologically linked human infection. Taken together, our findings provide evidence for sustained evolution of SARS-CoV-2 in white-tailed deer and of deer-to-human transmission.
Idioma original | English |
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Publicación | Nature Microbiology |
DOI | |
Estado | Accepted/In press - 2022 |
Nota bibliográfica
Funding Information:We acknowledge the contributions of the Virus Detection, Molecular Diagnostics, DNA Core sections and the Biocomputing Centre of Public Health Ontario, and in particular S. Teatero for leading the genome sequencing efforts. We gratefully acknowledge contributions of SARS-CoV-2 genome sequences from other laboratories through GISAID (Supplementary Table ). We thank the licensed Ontario deer hunters who submitted samples for wildlife disease surveillance, the staff of MNRF’s CWD surveillance programme for their assistance with sample collection, and S. Hagey for GIS support. We also acknowledge the contributions of CFIA NCFAD’s Genomics Unit for their assistance with additional laboratory support and sequencing. S.M. and B.P. are members of the Canada and the Canadian Institutes for Health Research Coronavirus Variants Rapid Response Network (CoVaRR-Net). We are grateful to D. Bulir from McMaster University for providing the primer and probe sequences for the 5′ UTR RT–PCR SARS-CoV-2 PCR assay, and to M. Taipale for cathepsin L knock-out TMPRSS2-overexpressing Vero cells. We appreciate the Public Health Agency of Canada for uploading the raw sequencing data for the Public Health Ontario human sequence to the Short Read Archive. The CV3-25 antibody was produced using the pTT vector kindly provided by the Canada Research Council. We also thank D. Leclair, J. Provencher, C. Soos and A. Wilcox (Environment and Climate Change Canada) for comments on an earlier draft of the manuscript. Ethical approvals for this work were provided by Sinai Health System Research Ethics Board (#22-0030-E), Sunnybrook HSC Research Ethics Board (#SUN-2218) and University of Ottawa Research Ethics Board (#H-01-22-7842). Funding to S.M. was provided by the Public Health Agency of Canada and the Canadian Institutes for Health Research Operating grant: Emerging COVID-19 Research Gaps and Priorities #466984. J.D.K. was supported by the Association of Medical Microbiology and Infectious Diseases (AMMI) Canada 2020 AMMI Canada/Biomérieux Post Residency Fellowship in Microbial Diagnostics (unrestricted). Funding and computing resources for F.M. were provided by the Shared Hospital Laboratory, Dalhousie University and the Donald Hill Family. Funding for B.P. was provided by the Canadian Food Inspection Agency and the Canadian Safety and Security Program. Funding to J.B., T.B. and L.N. was provided by MNRF and the Public Health Agency of Canada. Funding for O.L. was from the Canadian Safety and Security Program, Laboratories Canada and CFIA. A.F. is the recipient of Canada Research Chair on Retroviral Entry no. RCHS0235 950-232424. M.C. is a Canada Research Chair in Molecular Virology and Antiviral Therapeutics (950-232840) and a recipient of an Ontario Ministry of Research, Innovation and Science Early Researcher Award (ER18-14-09). Funding to M.C. was provided by a COVID-19 Rapid Research grant from the Canadian Institutes for Health Research (CIHR, OV3 170632), CIHR stream 1 for SARS-CoV-2 Variant Research. Work from M.C. and A.F. is also supported by the Sentinelle COVID Quebec network led by the Laboratoire de Santé Publique du Québec (LSPQ) in collaboration with Fonds de Recherche du Québec-Santé (FRQS) and Genome Canada—Génome Québec, and by the Ministère de la Santé et des Services Sociaux (MSSS) and the Ministère de l’Économie et Innovation (MEI).
Publisher Copyright:
© 2022, The Author(s).
ASJC Scopus Subject Areas
- Microbiology
- Immunology
- Applied Microbiology and Biotechnology
- Genetics
- Microbiology (medical)
- Cell Biology
PubMed: MeSH publication types
- Journal Article