Published June 22, 2022 | Version v1
Journal article Open

Serial Intervals for SARS-CoV-2 Omicron and Delta Variants, Belgium, November 19–December 31, 2021

  • 1. Hasselt University, Hasselt, Belgium
  • 2. Sciensano, Brussels, Belgium
  • 3. Katholieke Universiteit Leuven, Leuven, Belgium

Description

We investigated the serial interval for SARS-CoV-2 Omicron BA.1 and Delta variants and observed a shorter serial interval for Omicron, suggesting faster transmission. Results indicate a relationship between empirical serial interval and vaccination status for both variants. Further assessment of the causes and extent of Omicron dominance over Delta is warranted.

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Funding

VERDI – SARS-coV2 variants Evaluation in pRegnancy and paeDIatrics cohorts 101045989
European Commission