Benefit of breastmilk: COVID-19 antibodies pass from vaccinated mothers to infants

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Study detects neutralizing antibodies against SARS-CoV-2 in stool samples of infants breastfed by vaccinated mothers with the potential to provide passive immunity against the virus. 

Researchers from the University of Massachusetts (MA, USA) assessed the immune composition in breastmilk from mothers who had received an mRNA-based COVID-19 vaccine and the potential transfer of protective antibodies to breastfeeding infants. The study, led by Vignesh Narayanaswamy, found that milk from immunized mothers neutralized the SARS-CoV-2 spike protein and the immune response was reflected in breastfed infants. The results provide reassurance to breastfeeding mothers and expecting mothers alike. 

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