Skip directly to site content Skip directly to page options Skip directly to A-Z link Skip directly to A-Z link Skip directly to A-Z link
Volume 28, Number 8—August 2022
Dispatch

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

Cécile Kremer1Comments to Author , Toon Braeye1, Kristiaan Proesmans, Emmanuel André, Andrea Torneri, and Niel Hens
Author affiliations: Hasselt University, Hasselt, Belgium (C. Kremer, A. Torneri, N. Hens); Sciensano, Brussels, Belgium (T. Braeye, K. Proesmans); Katholieke Universiteit Leuven, Leuven, Belgium (E. André); University Hospitals Leuven, Leuven (E. André); University of Antwerp, Antwerp, Belgium (N. Hens)

Main Article

Table

Estimated parameters of a normal distribution for the serial interval of SARS-CoV-2 Omicron and Delta variants, by different stratifications, Belgium, November 19–December 31, 2021*

Variant Stratification No. transmission pairs Posterior median (95% CrI) SD (95% CrI)
Omicron None 2,161 2.75 (2.65–2.86) 2.54 (2.46–2.61)
Delta
 None
 334
 3.00 (2.73–3.26)
 2.49 (2.31–2.69)
Omicron Within-household 1,412 2.80 (2.67–2.93) 2.60 (2.50–2.70)
Delta
 Within-household
 278
 3.04 (2.75–3.33)
 2.43 (2.24–2.65)
Omicron Between-household 672 2.72 (2.53–2.90) 2.44 (2.31–2.57)
Delta
 Between-household
 50
 2.78 (2.00–3.56)
 2.78 (2.30–3.45)
Omicron Both unvaccinated 346 2.69 (2.40–2.98) 2.75 (2.55–2.96)
Delta
 Both unvaccinated
 61
 2.54 (1.96–3.12)
 2.29 (1.93–2.78)
Omicron Both vaccinated 774 2.63 (2.46–2.81) 2.45 (2.33–2.58)
Delta
 Both vaccinated
 97
 3.38 (2.89–3.88)
 2.47 (2.16–2.86)
Omicron Both vaccinated + booster 47 3.34 (2.58–4.10) 2.59 (2.13–3.24)
Delta Both vaccinated + booster 0 NA NA

*No Delta transmission pairs in which both case-patients had received a booster vaccine were reported. CrI, credible interval; NA, not available

Main Article

1These first authors contributed equally to this article.

Page created: June 08, 2022
Page updated: July 20, 2022
Page reviewed: July 20, 2022
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
file_external