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SARS-CoV-2 Exposure in Norway Rats (Rattus norvegicus) from New York City
mBio, 2023-04, Vol.14 (2), p.e0362122-e0362122
[Peer Reviewed Journal]
ISSN: 2150-7511 ;EISSN: 2150-7511 ;DOI: 10.1128/mbio.03621-22 ;PMID: 36892291
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Title:
SARS-CoV-2 Exposure in Norway Rats (Rattus norvegicus) from New York City
Author:
Wang, Yang
;
Lenoch, Julianna
;
Kohler, Dennis
;
DeLiberto, Thomas J
;
Tang, Cynthia Y
;
Li, Tao
;
Tao, Yizhi Jane
;
Guan, Minhui
;
Compton, Susan
;
Zeiss, Caroline
;
Hang, Jun
;
Wan, Xiu-Feng
Lednicky, John A.
Subjects:
Animals
;
brown rats
;
COVID-19
;
Editor's Pick
;
Humans
;
New York City - epidemiology
;
Norway rats
;
rat coronavirus
;
rat COVID-19
;
Rats
;
Rats, Sprague-Dawley
;
Rattus norvegicus
;
Research Article
;
SARS-CoV-2
;
SARS-CoV-2 - genetics
;
Virology
Is Part Of:
mBio, 2023-04, Vol.14 (2), p.e0362122-e0362122
Description:
Millions of Norway rats (Rattus norvegicus) inhabit New York City (NYC), presenting the potential for transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) from humans to rats. We evaluated SARS-CoV-2 exposure among 79 rats captured from NYC during the fall of 2021. Our results showed that 13 of the 79 rats (16.5%) tested IgG- or IgM-positive, and partial SARS-CoV-2 genomes were recovered from all 4 rats that were qRT-PCR (reverse transcription-quantitative PCR)-positive. Genomic analyses suggest these viruses were associated with genetic lineage B, which was predominant in NYC in the spring of 2020 during the early pandemic period. To further investigate rat susceptibility to SARS-CoV-2 variants, we conducted a virus challenge study and showed that Alpha, Delta, and Omicron variants can cause infections in wild-type Sprague Dawley (SD) rats, including high replication levels in the upper and lower respiratory tracts and induction of both innate and adaptive immune responses. Additionally, the Delta variant resulted in the highest infectivity. In summary, our results indicate that rats are susceptible to infection with Alpha, Delta, and Omicron variants, and wild Norway rats in the NYC municipal sewer systems have been exposed to SARS-CoV-2. Our findings highlight the need for further monitoring of SARS-CoV-2 in urban rat populations and for evaluating the potential risk of secondary zoonotic transmission from these rat populations back to humans. The host tropism expansion of SARS-CoV-2 raises concern for the potential risk of reverse-zoonotic transmission of emerging variants into rodent species, including wild rat species. In this study, we present both genetic and serological evidence for SARS-CoV-2 exposure to the New York City wild rat population, and these viruses may be linked to the viruses that were circulating during the early stages of the pandemic. We also demonstrated that rats are susceptible to additional variants (i.e., Alpha, Delta, and Omicron) that have been predominant in humans and that susceptibility to infection varies by variant. Our findings highlight the reverse zoonosis of SARS-CoV-2 to urban rats and the need for further monitoring of SARS-CoV-2 in rat populations for potential secondary zoonotic transmission to humans.
Publisher:
United States: American Society for Microbiology
Language:
English
Identifier:
ISSN: 2150-7511
EISSN: 2150-7511
DOI: 10.1128/mbio.03621-22
PMID: 36892291
Source:
GFMER Free Medical Journals
MEDLINE
PubMed Central
DOAJ Directory of Open Access Journals
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