For years, federal health agencies like the CDC and FDA assured the public that mRNA COVID-19 vaccines were “safe and effective” — including for pregnant women. But newly released data reveals that these assurances weren’t just premature — they were dangerously misleading.
A recent study co-authored by former top advisers at President Donald Trump’s FDA and CDC shows a deeply concerning link: women who received the mRNA COVID vaccine early in pregnancy were 43% more likely to suffer a miscarriage.
To put that in perspective: after just the first dose, 13 out of every 100 pregnant women in the study lost their babies. With each additional booster, the risk increased even more. You can read the study for yourself here.
Even more alarming is what came before this new study: internal data Pfizer provided to President Biden’s FDA in 2021 showed 44% of pregnant participants in their trial experienced pregnancy loss after receiving the vaccine. Nearly half. But instead of alerting the public, that data was kept under wraps — until a court forced its release 16 months later.
That delay wasn’t just bureaucratic foot-dragging. It was a failure of leadership that put lives at risk and eroded public trust in our health institutions. Americans deserved transparency. Instead, they got silence.
It wasn’t until May 27, 2025 — after Robert F. Kennedy Jr. took over as Secretary of Health and Human Services — that the CDC officially withdrew its recommendation for routine COVID-19 vaccination of healthy children and pregnant women. By then, the damage had already been done.
Yet even now, some Democrat-led states — including California, Washington, Oregon, and Wisconsin — continue to push these vaccines for pregnant women, ignoring updated CDC guidance. These decisions defy not just federal recommendations but mounting scientific evidence.
This situation highlights a larger problem: when politics interferes with science, public health suffers. The Biden administration’s failure to disclose critical vaccine safety data sooner not only endangered pregnant women and their babies — it also contributed to a growing mistrust of government advice on medicine and vaccines more broadly.
Americans deserve a government that tells them the truth, especially when it comes to their health. The fact that it took a change in leadership and legal intervention to force transparency should concern everyone.