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The first case of a child infected with SARS-CoV-2 Omicron variant in Japan, December 2021.
Horigome, Akihisa; Yamanaka, Junko; Takasago, Satoshi; Iwamoto, Noriko; Saito, Tomoya; Shichino, Hiroyuki.
  • Horigome A; Department of Pediatrics, National Center for Global Health and Medicine, Japan.
  • Yamanaka J; Department of Pediatrics, National Center for Global Health and Medicine, Japan.
  • Takasago S; Department of Pediatrics, National Center for Global Health and Medicine, Japan.
  • Iwamoto N; Disease Control and Prevention Center, National Center for Global Health and Medicine, Japan.
  • Saito T; Center for Emergency Preparedness and Response, National Institute of Infectious Diseases, Japan.
  • Shichino H; Department of Pediatrics, National Center for Global Health and Medicine, Japan.
Jpn J Infect Dis ; 2022 Aug 31.
Article in English | MEDLINE | ID: covidwho-2231039
ABSTRACT
We report the first pediatric patient infected with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) Omicron variant in Japan. The patient was a one-year-old boy who resided in Japan. He went abroad from 12 November 2021 to 28 November 2021 with his parents and had no known contact with COVID-19 patients there. His father tested positive for SARS-CoV-2 via quantitative antigen test on arrival at Narita International Airport on 28 November 2021. Because the boy and his mother both tested negative for SARS-CoV-2, they quarantined together at a hotel separately from his father. On 4 December 2021, the boy tested positive by reverse-transcription polymerase chain reaction (RT-PCR) for SARS-CoV-2 without symptoms and was hospitalized with his mother. He and his father were both found to be infected with SARS-CoV-2 Omicron variant. The boy had not been vaccinated for COVID-19. The RT-PCR results were negative starting 20 December 2021. The incubation period and required period for negative conversion of SARS-CoV-2 RNA of this Omicron variant case were similar to the periods of conventional cases. We have to carefully consider the potential of the SARS-CoV-2 Omicron variant to spread widely among unvaccinated children.
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Full text: Available Collection: International databases Database: MEDLINE Topics: Vaccines / Variants Language: English Journal subject: Communicable Diseases Year: 2022 Document Type: Article Affiliation country: Yoken.JJID.2021.896

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Full text: Available Collection: International databases Database: MEDLINE Topics: Vaccines / Variants Language: English Journal subject: Communicable Diseases Year: 2022 Document Type: Article Affiliation country: Yoken.JJID.2021.896