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After mRNA vaccination, COVID vaccines such as Pfizer and Moderna pass into breast milk. The results of the new study are published in JAMA Pediatrics. Scientists have long argued about the distribution of the vaccine after it enters the body. It was assumed that after its introduction into the shoulder muscle, it remained there. Experts disputed this claim, given that Pfizer's own biodistribution studies in animals have shown that lipid nanoparticles are distributed throughout the body and accumulate in various organs, including reproductive organs. The new study examined the breast milk of 11 breastfeeding mothers. Lipid nanoparticles from COVID vaccines were detected in the milk of seven subjects. According to scientists, the particles were only detected in the first 48 hours after vaccination.
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