CDC/FDA data now show miscarriages were reported 11,300% more often after COVID shots compared with flu vaccines.

The available sources do not substantiate the specific 11,300% comparison. A large percentage increase based on spontaneous reports can be produced by differences in reporting volume, surveillance practices, vaccination coverage, reporting periods, and the populations receiving each vaccine. Such reports are signals for investigation, not confirmed diagnoses or evidence of causation.

Several sources specifically address the underlying interpretation:

• Reuters reported that the CDC had not observed an increase in miscarriage reports after COVID-19 vaccines or evidence that vaccination was raising the rate of spontaneous abortion or stillbirth.
• The New York Times, NBC News, AFP, and Daily Mail described the renewed miscarriage claims as misleading or false and noted that studies involving large numbers of pregnant people have not found an increased risk of miscarriage from COVID vaccination.
• Scientific Reports published research evaluating miscarriage incidence after COVID-19 vaccination. Its search-result summary references evidence finding no increased risk, including studies reporting lower or unchanged miscarriage risk after vaccination.
• American Thinker and a Substack article present higher counts of fetal-death or miscarriage reports, including reports submitted to passive surveillance systems. Those articles do not establish that the vaccines caused the reported outcomes or provide a valid, directly comparable flu-vaccine denominator.
• LifeNews repeats an alleged 81% or 82% miscarriage rate from early vaccine safety data. The Yahoo fact check explains that those figures result from miscalculating incomplete data and do not represent the miscarriage rate among women vaccinated in the first trimester.

The material distinction is between a report received after vaccination and a miscarriage attributable to vaccination. Miscarriages are relatively common background events, and some will occur after vaccination by coincidence. Reliable epidemiological studies and public-health reviews generally assess miscarriage incidence against an appropriate unvaccinated or comparison group, rather than simply counting reports submitted after vaccination.

The claim also says that CDC/FDA data show the result, but the provided evidence does not include an underlying CDC or FDA analysis reporting an 11,300% relative increase against flu vaccines. The available source summaries instead show that the figure is associated with secondary or advocacy commentary and is disputed by fact checks and epidemiological evidence.