Canadian population study shows that mRNA COVID-19 vaccination DURING 2nd &3rd trimester of pregnancy did not increase rate of adverse peripartum outcomes (vs no vax or vax post-Preg). Comparison of 97 590 Preg vs 44 815 non-preg https://t.co/n7nWcoLw4S https://t.co/uiVOg5A1S8