New study about the detection of mRNA COVID-19 vaccines in human milk

[Lactation Clinic]

A new study just published on September 26, 2022 recommended "caution is warranted about breastfeeding children younger than 6 months in the first 48 hours after maternal vaccination until more safety studies are conducted". Trace amounts of BNT162b2 and mRNA-1273 COVID-19 mRNA vaccines were detected in 7 samples from 5 different participants at various times up to 45 hours postvaccination.
Link: [url]https://jamanetwork.com/journals/jamapediatrics/fullarticle/2796427[/url]
Please suggest. Thank you so much.

[admin]

LC:

Interesting read. While antiCovid mRNA may be detectable in human milk, I can't see how it would be stable in the GI tract of an infant. mRNA is so unstable after thawing, that it has to be discarded within a few hours. How could it last or survive in an acid environment of the stomach, or survive pancreatic enzymes in the duodenum?

Thanks for the article. We'll have to wait a bit longer to understand this process.

Tom Hale Ph.D.
InfantRisk Center

[Lactation Clinic]

Thank you so much for your valuable suggestion.