Researchers conducted a study in which they assessed breast milk from 18 women who tested positive for SARS-CoV-2. 64 samples of breast milk were collected at various times both before and after the women tested positive for SARS-CoV-2. For the samples collected, a RT-PCR assay for SARS-CoV-2 was utilized, as well as tissue culture techniques to analyze if replication competent SARS-CoV-2 developed in the breast milk samples. Only one sample of breast milk contained SARS-CoV-2 RNA. None of the breast milk samples contained replication competent SARS-CoV-2, including the one sample that contained viral RNA. Replication competent SARS-CoV-2 was manually added to two breast milk samples, but after Holder pasteurization, no viral RNA or any replication competent SARS-CoV-2 was detected in the samples. Thus, the results of this study suggest that it is safe to feed breast milk to babies.