Why there's no blanket recommendation on COVID-19 vaccination in pregnancy

Those who are pregnant or breastfeeding will have to weigh their own risks when deciding whether to be vaccinated to protect against COVID-19 because it hasn't been studied in clinical trials, Canadian doctors say. https://www.cbc.ca/news/health/covid-19-vaccine-pregnant-breastfeeding-1.5845956?cmp=rss #news/health