Clinical implications
This study supports the idea that SARS-CoV-2 is not detected in breast
milk even when active infection is present at the time of delivery and
therefore, possibility of vertical transmission while breastfeeding is
extremely low. Furthermore, since antibodies are found in the colostrum
irrespectively of the time of infection, all women should be encouraged
to breast feed their infants, undertaking strict contact precautions
when there is active disease. Nevertheless, since IgA drops
significantly from the colostrum to mature milk, we could speculate that
they might lower even further afterwards, so public health measures
should still be maintained.