Vaccine effectiveness against infection and onwards transmission of COVID-19: Analysis of Belgian contact tracing data, January-June 2021.
Ziekten en gezondheid in kaart brengen
Public Access
Published
Auteurs
Toon Braeye [2]; Laura Cornelissen [3]; Lucy Catteau [4]; Freek Haarhuis [5]; Kristiaan Proesmans [6]; Karin De Ridder [7]; Achille Djiena [8]; Romain Mahieu [9]; Frances De Leeuw [10]; Alex Dreuw [11]; Hammami, Naïma [12]; Sophie Quoilin [13]; Herman Van Oyen [14]; Chloé Wyndham-Thomas [15]; Dieter Van Cauteren [16]Trefwoorden
Article written during project(s) :
Samenvatting:
In Belgium, high-risk contacts of an infected person were offered PCR-testing irrespective of their vaccination status. We estimated vaccine effectiveness (VE) against infection and onwards transmission, controlling for previous infections, household-exposure and temporal trends. We included 301,741 tests from 25 January to 24 June 2021. Full-schedule vaccination was associated with significant protection against infection. In addition, mRNA-vaccines reduced onward transmission: VE-estimates increased to >90% when index and contact were fully vaccinated. The small number of viral-vector …