In January 2021, in the absence of any human data in pregnancy, the CDC stated on its website that mRNA vaccines were "Unlikely to pose a specific risk for people who are pregnant."
Behind the scenes however, Pfizer was scrambling to conduct a clinical trial of its vaccine in pregnant women.
"It's not surprising though. The vaccine had already been recommended for pregnant women and many have taken it, so there is no upside to completing a trial that may detect signals of potential harms. It can only create problems for them, right?" he added.
"There are just not enough babies in this trial to detect rare or very rare adverse events. We learned from studies in animals that lipid nanoparticles in the vaccine can deposit in many organs including the ovaries, so we must be extremely cautious about the potential negative impacts of the vaccine on reproductive health," said Spelsberg.
"The scientific community urgently needs access to the pregnancy study data on the patient level for transparency and independent scrutiny of vaccine safety and efficacy because regulatory oversight is failing," she added.
Of the 13 pregnancies unaccounted for, Pfizer reported one foetal death in the vaccine group and the outcome of the other 12 pregnancies remains unknown.
Moderna is also conducting a clinical trial of its mRNA vaccine in pregnancy, but no data are available.
https://brownstone.org/articles/pfizer-drip-feeds-data-from-its-pregnancy-trial/
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