Objective To estimate the effectiveness of mRNA covid-19 vaccines against symptomatic
infection and severe outcomes (hospital admission or death). Design Test negative design …

Background Vaccinating children (≤17 years old) is important for controlling the COVID-19
pandemic. As parents are primary decision makers for their children, we aimed to assess …

Importance There is limited comparative epidemiological evidence on outcomes associated
with COVID-19 vaccination during pregnancy; monitoring pregnancy outcomes in large …

Background: Acceptance of a vaccine against SARS-CoV-2 is critical to achieving high
levels of immunization. The objectives of this study were to understand mothers’ SARS-CoV-2 …

Objective To assess the risk of preterm birth, small for gestational age at birth, and stillbirth
after covid-19 vaccination during pregnancy. Design Population based retrospective cohort …

Background Vaccine uptake rates have been historically low in correctional settings. To better
understand vaccine hesitancy in these high-risk settings, we explored reasons for COVID-…

Background By July 2021, Canada had received enough COVID-19 vaccines to fully
vaccinate every eligible Canadian. However, despite the availability of vaccines, some eligible …

Canadian children 5–11 years old became eligible for COVID-19 vaccination on November
19, 2021, with eligibility for younger children expected later. We aimed to descriptively …

Introduction Canadian correctional institutions have been prioritized for COVID-19 vaccination
given the multiple outbreaks that have occurred since the start of the pandemic. Given …

Objective To investigate COVID-19 vaccine uptake and intent among pregnant people in
Canada, and determine associated factors. Methods We conducted a national cross-sectional …