Antibodies in breastmilk, natural immunity wins again!

“In general, we found that the acute infection elicited a broader cross-reactive antibody response against HCoV spike proteins compared to the two dose mRNA vaccinations.

Interestingly, the high correlation between SARS-CoV-2 S2-reactive and β-HCoV-reactive IgA occurred only in the post-infection cohort, and not after vaccination. This suggests that infection may elicit a broader cross-reactive IgA response in milk than vaccination”