Emerg Infect Dis
. 2022 Jun 22;28(8).
doi: 10.3201/eid2808.220220. Online ahead of print.
Serial Intervals for SARS-CoV-2 Omicron and Delta Variants, Belgium, November 19-December 31, 2021
Cécile Kremer, Toon Braeye, Kristiaan Proesmans, Emmanuel André, Andrea Torneri, Niel Hens
- PMID: 35732195
- DOI: 10.3201/eid2808.220220
Abstract
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.
Keywords: Belgium; COVID-19; SARS-CoV-2; coronavirus disease; respiratory infections; serial interval; severe acute respiratory syndrome coronavirus 2; vaccine-preventable diseases; variants of concern; viruses; zoonoses.