VERIFY: No evidence that COVID-19 vaccines increase miscarriages The CDC released an update showing of more than 30,000 pregnant women monitored after receiving the vaccine, there was no increase in the frequency of miscarriages. Author: Josslyn Howard Updated: 8:23 PM EDT April 19, 2021 JACKSONVILLE, Fla. — A claim that a rate of miscarriages have significantly increased in women who received the COVID-19 vaccine has been circulating the internet, but there is no data to support this. The claim says vaccines caused a 366% increase in miscarriages in 6 weeks, but experts said this data is missing important context. Sources UF Health The UK’s Medicines And Healthcare Products Regulatory Agency