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Two cases of breakthrough SARS-CoV-2 infections caused by the Omicron variant (B.1.1.529 lineage) in international travelers to Japan.

ABSTRACT: In November 2021, the World Health Organization designated a new SARS-CoV-2 variant of concern, Omicron (PANGO lineage B.1.1.529). We report on first two cases of breakthrough COVID-19 caused by Omicron in Japan among international travelers returning from the country with undetected infection. The spread of infection by Omicron were considered.

SUBMITTER: Maruki T

PROVIDER: S-EPMC8755371 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Omicron (B.1.1.529): Infectivity, vaccine breakthrough, and antibody resistance.

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