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Shorter serial intervals in SARS-CoV-2 cases with Omicron BA.1 variant compared with Delta variant, the Netherlands, 13 to 26 December 2021

2022; European Centre for Disease Prevention and Control; Volume: 27; Issue: 6 Linguagem: Inglês

10.2807/1560-7917.es.2022.27.6.2200042

ISSN

1560-7917

Autores

Jantien A. Backer, Dirk Eggink, Stijn P. Andeweg, Irene Veldhuijzen, Noortje van Maarseveen, Klaas Vermaas, Boris Vlaemynck, Raf Schepers, Susan van den Hof, Chantal Reusken, Jacco Wallinga,

Tópico(s)

COVID-19 Clinical Research Studies

Resumo

The SARS-CoV-2 Omicron variant has a growth advantage over the Delta variant because of higher transmissibility, immune evasion or shorter serial interval. Using S gene target failure (SGTF) as indication for Omicron BA.1, we identified 908 SGTF and 1,621 non-SGTF serial intervals in the same period. Within households, the mean serial interval for SGTF cases was 0.2-0.6 days shorter than for non-SGTF cases. This suggests that the growth advantage of Omicron is partly due to a shorter serial interval.

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