Verdict: False. The 82% figure comes from an incorrect calculation that uses only selected completed pregnancies, not all women vaccinated in the first or second trimester.
False
82% of women who got the vaccine in their first or second trimester had a miscarriage
What was submitted
The Claim
82% of women who got the vaccine in their first or second trimester had a miscarriage
What Exactly Is Going on With the Outrage Over Fauci and Miscarriages?
Source: rollingstone.com
At a glance
Verified August 12, 2026Key Evidence
Full Fact concluded that the calculation behind the claim does not establish the miscarriage rate for women vaccinated in the first or second trimester.
FactCheck.org reported that the 82% number does not appear in the study and was produced by restricting the denominator to early-vaccinated participants who had reported completed pregnancies.
The reporting
What the Evidence Shows
What is established
FactCheck.org reported that preliminary CDC monitoring did not find miscarriage occurring more frequently than expected among vaccinated people.
Context and caveats
The claim treats a selected subset of completed pregnancies as though it represented all women vaccinated in the first or second trimester, creating a wrong denominator.
A valid miscarriage rate for the relevant vaccination group requires complete outcome data for the cohort; the cited explanation says that information was not yet available.
The approved evidence addresses the calculation and interpretation of the 82% figure; it does not provide a single complete miscarriage-rate estimate for every woman vaccinated in the first or second trimester.
Primary trail
Verified Sources7
Open source