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Predicted dominance of variant Delta of SARS-CoV-2 before Tokyo Olympic Games, Japan, July 2021.
Ito, Kimihito; Piantham, Chayada; Nishiura, Hiroshi.
  • Ito K; International Institute for Zoonosis Control, Hokkaido University, Hokkaido, Japan.
  • Piantham C; Graduate School of Infectious Diseases, Hokkaido University, Hokkaido, Japan.
  • Nishiura H; Graduate School of Medicine, Kyoto University, Kyoto, Japan.
Euro Surveill ; 26(27)2021 07.
Article in English | MEDLINE | ID: covidwho-1304571
ABSTRACT
Using numbers of SARS-CoV-2 variants detected in Japan as at 13 June 2021, relative instantaneous reproduction numbers (RRI) of the R.1, Alpha, and Delta variants with respect to other strains circulating in Japan were estimated at 1.25, 1.44, and 1.95. Depending on the assumed serial interval distributions, RRI varies from 1.20-1.32 for R.1, 1.34-1.58 for Alpha, and 1.70-2.30 for Delta. The frequency of Delta is expected to take over Alpha in Japan before 23 July 2021.
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Full text: Available Collection: International databases Database: MEDLINE Main subject: SARS-CoV-2 / COVID-19 Type of study: Observational study / Prognostic study Topics: Variants Limits: Humans Country/Region as subject: Asia Language: English Journal subject: Communicable Diseases Year: 2021 Document Type: Article Affiliation country: 1560-7917.ES.2021.26.27.2100570

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Full text: Available Collection: International databases Database: MEDLINE Main subject: SARS-CoV-2 / COVID-19 Type of study: Observational study / Prognostic study Topics: Variants Limits: Humans Country/Region as subject: Asia Language: English Journal subject: Communicable Diseases Year: 2021 Document Type: Article Affiliation country: 1560-7917.ES.2021.26.27.2100570