tetano
Editor, Senior Moderator
Glob Health Med
. 2022 Apr 30;4(2):133-136.
doi: 10.35772/ghm.2021.01124.
The first eleven cases of SARS-CoV-2 Omicron variant infection in Japan: A focus on viral dynamics
Nobumasa Okumura[SUP] 1 [/SUP], Shinya Tsuzuki[SUP] 1 2 3 [/SUP], Sho Saito[SUP] 1 [/SUP], Tomoya Saito[SUP] 4 [/SUP], Satoshi Takasago[SUP] 5 [/SUP], Masayuki Hojo[SUP] 6 [/SUP], Noriko Iwamoto[SUP] 1 [/SUP], Norio Ohmagari[SUP] 1 2 [/SUP]
Affiliations
Abstract
The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) Omicron variant has spread rapidly worldwide. We report the clinical characteristics and threshold cycle (Ct) values of the first 11 patients infected with the SARS-CoV-2 Omicron variant in Japan. All patients were younger returnees from abroad; 10 patients had received two doses of vaccine. Estimated Ct values for the 11 patients were 6.0 (95% confidence interval [CI] 4.2-7.3) days for > 30, 10.6 (95% CI 9.5-11.9) days for > 35, 15.1 (95% CI 13.6-17.6) days for > 40, and 19.7 (95% CI 17.3- 23.7) days for > 45. Our results provide important insights for indicators of infection control.
Keywords: B.1.1.529; COVID-19; characteristics; threshold cycle.
. 2022 Apr 30;4(2):133-136.
doi: 10.35772/ghm.2021.01124.
The first eleven cases of SARS-CoV-2 Omicron variant infection in Japan: A focus on viral dynamics
Nobumasa Okumura[SUP] 1 [/SUP], Shinya Tsuzuki[SUP] 1 2 3 [/SUP], Sho Saito[SUP] 1 [/SUP], Tomoya Saito[SUP] 4 [/SUP], Satoshi Takasago[SUP] 5 [/SUP], Masayuki Hojo[SUP] 6 [/SUP], Noriko Iwamoto[SUP] 1 [/SUP], Norio Ohmagari[SUP] 1 2 [/SUP]
Affiliations
- PMID: 35586770
- PMCID: PMC9066457
- DOI: 10.35772/ghm.2021.01124
Abstract
The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) Omicron variant has spread rapidly worldwide. We report the clinical characteristics and threshold cycle (Ct) values of the first 11 patients infected with the SARS-CoV-2 Omicron variant in Japan. All patients were younger returnees from abroad; 10 patients had received two doses of vaccine. Estimated Ct values for the 11 patients were 6.0 (95% confidence interval [CI] 4.2-7.3) days for > 30, 10.6 (95% CI 9.5-11.9) days for > 35, 15.1 (95% CI 13.6-17.6) days for > 40, and 19.7 (95% CI 17.3- 23.7) days for > 45. Our results provide important insights for indicators of infection control.
Keywords: B.1.1.529; COVID-19; characteristics; threshold cycle.