Preprint
Effectiveness of Maternal mRNA COVID-19 Vaccination During Pregnancy Against Delta and Omicron SARS-CoV-2 Infection and Hospitalization in Infants: A Test-Negative Design Study
Abstract
Background: COVID-19 vaccination during pregnancy may confer protective immunity to infants through transplacental antibody transfer. We estimated the effectiveness of maternal vaccination with a second or third mRNA COVID-19 vaccine dose during pregnancy against Delta and Omicron SARS-CoV-2 infection and hospitalization in infants.Methods: We conducted a test-negative design study in Ontario, Canada among infants younger than six months born …
Authors
Jorgensen SC; Hernandez A; Fell D; Austin PC; D’Souza R; Guttmann A; Kopp A; Brown KA; Buchan S; Gubbay JB
Publication date
January 1, 2022
DOI
10.2139/ssrn.4246651
Preprint server
SSRN Electronic Journal