Importance There are limited high-quality, population-level data about the effect of SARS-CoV-2
infection on pregnancy using contemporaneous comparator cohorts. Objectives To …

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

Objectives. We evaluated the relationship between maternal H1N1 vaccination and fetal
and neonatal outcomes among singleton births during the 2009–2010 H1N1 pandemic. …

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 …

… Knight M, Chiocchia V, Partlett C, Rivero-Arias O, Hua X, Hinshaw K, Tuffnell D, Linsell L,
Juszczak E, ANODE collaborative group … Hiersch L, Bergel-Bson R, Asher D, Aviram A …

Ontario Midwifery Program and the Niday Perinatal Database. These programmes worked
together to normalize their data and build a robust, web-based data-collection and reporting …

Importance Seasonal influenza vaccination in pregnancy can reduce influenza illness
among pregnant women and newborns. Evidence is limited on whether seasonal influenza …

Medline references were sought using the MeSH term" hemorrhagic shock." All articles
published in the disciplines of obstetrics and gynaecology, surgery, trauma, critical care, …

Background Ontario’s birth Registry (BORN) was established in 2009 to collect, interpret,
and share critical data about pregnancy, birth and the early childhood period to facilitate and …

Importance The extent to which assisted reproductive technology is associated with
increased risk of congenital heart defects independent of its known association with twinning …