Since many people have significant cytokines storm and fever after the 2nd dose, this theoretically could be associated with miscarriage in the 1st trimester." NEW: Dr. Fauci was concerned in January 2021 that the second dose of the COVID shot “theoretically could be associated with miscarriage in the 1st trimester.” @SenRandPaul and I released the texts between Anthony Fauci, Rochelle Walensky, and Vivek Murthy below. The text message from Fauci calls into question the studies cited by the CDC claiming there was no increased miscarriage risk for pregnant women. Several peer-reviewed studies published after Fauci left federal office, including U.S.-based research published as recently as 2025, have also found no evidence that vaccination directly increased miscarriage risk.