Table 1.

Unique bacterial isolates by genus and species isolated from breast milk and infant stool samples obtained from 15 mothers and their infants aged 1, 2 or 3 months (n= 5 per infant age group)

Bacterial genus and species	Source	No of unique isolates	Comments
Bifidobacterium boum	Fecal	2
	Milk	2	From same individual
Bifidobacterium breve	Fecal	5	From same infant (age 1 month)
Bifidobacterium longum	Fecal	5	From 3 infants (ages 1 and 2 months)
Bifidobacterium longum subsp. infantis*	Fecal	6	From 4 infants (ages 1, 2, 3 months). One isolate match with mother.
	Milk	1	Matched that of her 3-month old infant
Bifidobacterium longum subsp longum	Fecal	2
Bifidobacterium scardovii	Fecal	2
Lactobacillus crispatus	Fecal	2	From same infant
Lactobacillus fermentum	Fecal	1	Matched isolate from mother
Lactobacillus gasseri	Fecal	10	From 5 infants
	Milk	8	From 4 mothers. One isolate from each of 3 mothers matched a isolate from her infant
Lactobacillus paracasei	Fecal	2	From same infant
Lactobacillus rhamnosus	Fecal	10	From 4 infants
Enterococcus casseliflavus	Fecal	3	From same infant
	Milk	1
Enteroccocus faecalis	Fecal	9	One isolate matched in mother and infant
	Milk	2	From same individual. One match in mother and infant
Corynebacterium variabile	Milk	1
Proprionibacterium acnes	Fecal	1
	Milk	3	From 2 individuals
Propionibacterium avidum	Fecal	1
	Milk	1
Rothia mucilaginosa	Milk	1
Staphylococcus epidermidis	Milk	10	4 from a single mother
Streptococcus gordoniI	Milk	1
Streptococcus mitis	Milk	14
Streptococcus oralis	Milk	1
Streptococcus parasanguinis	Milk	4	From 3 individuals
Streptococcus salivarius	Milk	13	From 9 individuals
Streptococcus vestibularis	Milk	2
Total number of unique isolates		126

^aBold shaded rows denote mother-infant isolate matches among isolates.

^bIsolated from separate individuals unless otherwise noted. C:\broker\TFJ-US\KGMI\KGMI_A_1103425\KGMI_A_1103425\KGMI_A_1103425.