evidence: An article by the website Daily Expose, shared on Facebook and Instagram, claims the US Centre for Disease Control and Prevention (CDC) grossly underreported miscarriage figures found in a study on Covid-19 vaccine safety during pregnancy. [...] The article claims the true miscarriage rate was 82%. This was calculated by excluding all 700 participants who had live births who were vaccinated in their third trimester. This left 127 people who received the vaccine in the first two trimesters, 104 of whom (82%) had miscarriages. [...] To calculate the actual miscarriage rate for those vaccinated in the first and second trimesters, you’d need to divide the number of miscarriages by the total number of completed pregnancies of those who were vaccinated before 26 weeks. But we don’t have that total yet because most of those people are still pregnant.