Table 1.

Children infection outcomes among articles with breast milk samples tested for SARS‐CoV‐2 RNA

Articles with breast milk samples available: 37
Neonates ≤28 days old
	Confirmed COVID‐19 a	Negative COVID‐19 b	Total	Studies
Breastfeeding c	8	15	23	Positive cases 14 , 15 , 21 , 33 , 34 , 35 Negative cases 16 , 35 , 37 , 38
Breast milk substitute (infant formula)d	2	16	18	Positive cases 12 , 22 Negative cases 13 , 20 , 26 , 30 , 36 , 42
Mix‐feeding	2	2	4	Positive cases 10 , 40 Negative cases 10 , 39
Not reported feeding practice	2	25	27	Positive cases 11 , 14 Negative cases 13 , 18 , 23 , 27 , 28 , 29 , 31 , 43 , 44 , 45
Infants >28 days old)
Breastfeeding c	2	0	2	17, 25
Breast milk substitute (infant formula) d	0	0	0
Mix‐feeding	3	0	3	19, 24, 32
Not reported feeding practice	0	0	0
Total	19	58	77

^aConfirmed cases are defined as individuals with a positive RT‐PCR test for SARS‐CoV‐2 RNA.

^bNegative COVID‐19 are individuals with a negative RT‐PCR test for SARS‐CoV‐2 RNA.

^cThe frequency of exclusivity of breastfeeding before infection is not clear among these studies.

^dIn one case, ¹² the newborn was isolated from the mother and, therefore, presumably fed with a breast milk substitute.