Surveillance of SARS-CoV-2 Infection in Rodent Populations in Tokyo, Japan

The persistence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) among wildlife populations poses a potential risk for the emergence of novel variants. Therefore, monitoring SARS-CoV-2 infections in animals is crucial. As urban rodents live in close proximity to human habitats, there...

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Published inJapanese Journal of Infectious Diseases Vol. 77; no. 6; pp. 342 - 344
Main Authors Kuroda, Yudai, Hotta, Akitoyo, Taira, Masakatsu, Koizumi, Nobuo, Tatemoto, Kango, Park, Eun-sil, Virhuez-Mendoza, Milagros, Yamamoto, Tsukasa, Komatsu, Noriyuki, Shibo, Keigo, Sasaki, Takeshi, Mori, Yoshiyuki, Watanabe, Kentaro, Kiyokawa, Yasushi, Eguchi, Yuya, Banzai, Azusa, Katahira, Hirotaka, Tanikawa, Tsutomu, Maeda, Ken
Format Journal Article
LanguageEnglish
Published Japan National Institute of Infectious Diseases 29.11.2024
Japan Science and Technology Agency
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Abstract The persistence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) among wildlife populations poses a potential risk for the emergence of novel variants. Therefore, monitoring SARS-CoV-2 infections in animals is crucial. As urban rodents live in close proximity to human habitats, there is a concern that they may be a potential source of zoonoses. To examine the prevalence of SARS-CoV-2 in rodent populations, we analyzed 128 serum samples and 129 oral swabs collected from 128 brown rats (Rattus norvegicus) and two black rats (Rattus rattus) captured for pest control purposes in Tokyo, Japan, between May and December 2023. A virus-neutralizing test using the omicron variant revealed no evidence of SARS-CoV-2 infection. Real-time reverse transcription- PCR of oral swabs did not detect any SARS-CoV-2 RNA-positive rats. These results indicate a low probability of SARS-CoV-2 circulation among rat populations in Tokyo.
AbstractList The persistence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) among wildlife populations poses a potential risk for the emergence of novel variants. Therefore, monitoring SARS-CoV-2 infections in animals is crucial. As urban rodents live in close proximity to human habitats, there is a concern that they may be a potential source of zoonoses. To examine the prevalence of SARS-CoV-2 in rodent populations, we analyzed 128 serum samples and 129 oral swabs collected from 128 brown rats (Rattus norvegicus) and two black rats (Rattus rattus) captured for pest control purposes in Tokyo, Japan, between May and December 2023. A virus-neutralizing test using the omicron variant revealed no evidence of SARS-CoV-2 infection. Real-time reverse transcription- PCR of oral swabs did not detect any SARS-CoV-2 RNA-positive rats. These results indicate a low probability of SARS-CoV-2 circulation among rat populations in Tokyo.
The persistence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) among wildlife populations poses a potential risk for the emergence of novel variants. Therefore, monitoring SARS-CoV-2 infections in animals is crucial. As urban rodents live in close proximity to human habitats, there is a concern that they may be a potential source of zoonoses. To examine the prevalence of SARS-CoV-2 in rodent populations, we analyzed 128 serum samples and 129 oral swabs collected from 128 brown rats (Rattus norvegicus) and two black rats (Rattus rattus) captured for pest control purposes in Tokyo, Japan, between May and December 2023. A virus-neutralizing test using the omicron variant revealed no evidence of SARS-CoV-2 infection. Real-time reverse transcription- PCR of oral swabs did not detect any SARS-CoV-2 RNA-positive rats. These results indicate a low probability of SARS-CoV-2 circulation among rat populations in Tokyo.The persistence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) among wildlife populations poses a potential risk for the emergence of novel variants. Therefore, monitoring SARS-CoV-2 infections in animals is crucial. As urban rodents live in close proximity to human habitats, there is a concern that they may be a potential source of zoonoses. To examine the prevalence of SARS-CoV-2 in rodent populations, we analyzed 128 serum samples and 129 oral swabs collected from 128 brown rats (Rattus norvegicus) and two black rats (Rattus rattus) captured for pest control purposes in Tokyo, Japan, between May and December 2023. A virus-neutralizing test using the omicron variant revealed no evidence of SARS-CoV-2 infection. Real-time reverse transcription- PCR of oral swabs did not detect any SARS-CoV-2 RNA-positive rats. These results indicate a low probability of SARS-CoV-2 circulation among rat populations in Tokyo.
ArticleNumber JJID.2024.143
Author Kuroda, Yudai
Sasaki, Takeshi
Park, Eun-sil
Mori, Yoshiyuki
Tatemoto, Kango
Virhuez-Mendoza, Milagros
Yamamoto, Tsukasa
Watanabe, Kentaro
Tanikawa, Tsutomu
Kiyokawa, Yasushi
Shibo, Keigo
Eguchi, Yuya
Hotta, Akitoyo
Koizumi, Nobuo
Komatsu, Noriyuki
Katahira, Hirotaka
Taira, Masakatsu
Banzai, Azusa
Maeda, Ken
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  organization: Department of Veterinary Science, National Institute of Infectious Diseases, Japan
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  fullname: Taira, Masakatsu
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  organization: Department of Veterinary Science, National Institute of Infectious Diseases, Japan
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References_xml – reference: 6. Wang Y, Lenoch J, Kohler D, et al. SARS-CoV-2 exposure in Norway rats (Rattus norvegicus) from New York City. mBio. 2023;14:e0362122.
– reference: 3. Hammer AS, Quaade ML, Rasmussen TB, et al. SARS-CoV-2 transmission between mink (Neovison vison) and humans, Denmark. Emerg Infect Dis. 2021;27:547-551.
– reference: 13. Martínez-Hernández F, Gonzalez-Arenas NR, Cervantes JAO, et al. Identification of SARS-CoV-2 in urban rodents from Southern Mexico City at the beginning of the COVID-19 pandemic. Rev Inst Med Trop Sao Paulo. 2024;66:e8.
– reference: 1. Rahman MT, Sobur MA, Islam MS, et al. Zoonotic diseases: etiology, impact, and control. Microorganisms. 2020;8:1405.
– reference: 2. Decaro N, Lorusso A. Novel human coronavirus (SARS-CoV-2): a lesson from animal coronaviruses. Vet Microbiol. 2020;244:108693.
– reference: 5. Robinson SJ, Kotwa JD, Jeeves SP, et al. Surveillance for SARS-CoV-2 in Norway rats (Rattus norvegicus) from Southern Ontario. Transbound Emerg Dis. 2023;2023:7631611.
– reference: 4. Kuchipudi SV, Surendran-Nair M, Ruden RM, et al. Multiple spillovers from humans and onward transmission of SARS-CoV-2 in white-tailed deer. Proc Natl Acad Sci U S A. 2022;119:e2121644119.
– reference: 14. Colombo VC, Sluydts V, Mariën J, et al. SARS-CoV-2 surveillance in Norway rats (Rattus norvegicus) from Antwerp sewer system, Belgium. Transbound Emerg Dis. 2022;69:3016-3021.
– reference: 15. Fisher AM, Airey G, Liu Y, et al. The ecology of viruses in urban rodents with a focus on SARS-CoV-2. Emerg Microbes Infect. 2023;12:2217940.
– reference: 7. Robins JH, Hingston M, Matisoo-Smith E, et al. Identifying Rattus species using mitochondrial DNA. Mol Ecol Notes. 2007;7:717-729.
– reference: 12. Wernike K, Mehl C, Aebischer A, et al. SARS-CoV-2 and other coronaviruses in rats, Berlin, Germany, 2023. bioRxiv. 2023; doi: https://doi.org/10.1101/2023.12.15.571826. Preprint.
– reference: 8. Kuroda Y, Watanabe K, Yamamoto T, et al. Pet animals were infected with SARS-CoV-2 from their owners who developed COVID-19: case series study. Viruses. 2023;15:2028.
– reference: 9. Our World in Data. SARS-CoV-2 variants in analyzed sequences, Japan. Available at <https://ourworldindata.org/grapher/covid-variants-area?country=~JPN>. Accessed on March 25, 2024.
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  doi: 10.1155/2023/7631611
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  doi: 10.1128/mbio.03621-22
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  doi: 10.1101/2023.12.15.571826
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Snippet The persistence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) among wildlife populations poses a potential risk for the emergence of novel...
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SubjectTerms Animals
Coronaviruses
COVID-19
COVID-19 - diagnosis
COVID-19 - epidemiology
COVID-19 - veterinary
COVID-19 - virology
epidemiology
Humans
Pest control
Populations
Prevalence
Rats
Respiratory diseases
Reverse transcription
RNA, Viral - blood
RNA, Viral - genetics
Rodents
SARS-CoV-2
SARS-CoV-2 - genetics
SARS-CoV-2 - isolation & purification
Severe acute respiratory syndrome coronavirus 2
Tokyo - epidemiology
Viral diseases
Wildlife
Title Surveillance of SARS-CoV-2 Infection in Rodent Populations in Tokyo, Japan
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