biostudies-literatureUnknown28(3)Song JSTo clarify transmissibility of the severe acute respiratory syndrome coronavirus 2 Omicron variant, we determined serial intervals and secondary attack rates among household contacts in South Korea. Mean serial interval for 12 transmission pairs was 2.9 days, and secondary attack rate among 25 households was 50.0%, raising concern about a rapid surge in cases.Emerging infectious diseases756-759https://www.ebi.ac.uk/biostudies/studies/S-EPMC8888239biostudies-literatureSerial Intervals and Household Transmission of SARS-CoV-2 Omicron Variant, South Korea, 2021.PMC8888239Kim MSYoo HNKim EJKim IHLee JLee HYLee SEJeong HSKim MKim SGRhee JEPark YJSong JSLee JJfalseSerial Intervals and Household Transmission of SARS-CoV-2 Omicron Variant, South Korea, 2021.To clarify transmissibility of the severe acute respiratory syndrome coronavirus 2 Omicron variant, we determined serial intervals and secondary attack rates among household contacts in South Korea. Mean serial interval for 12 transmission pairs was 2.9 days, and secondary attack rate among 25 households was 50.0%, raising concern about a rapid surge in cases.2022-01-01T00:00:00Z2022 Mar2025-04-18T23:45:16.997Z2025-02-19T01:44:07.34ZS-EPMC88882393510741810.3201/eid2803.212607