TABLE 7.
Relative amounts (% of total) that bacterial communities found in infant oral, maternal feces, maternal oral, and milk may contribute to the bacterial composition of infant feces from day 2 to 6 mo of life1
| d 2 | d 5 | d 10 | 1 mo | 2 mo | 3 mo | 4 mo | 5 mo | 6 mo | |
|---|---|---|---|---|---|---|---|---|---|
| Infant oral | 1.1 ± 0.3 | 1.9 ± 0.5 | 2.0 ± 0.9 | 0.7 ± 0.2 | 0.9 ± 0.6 | 0.5 ± 0.2 | 3.1 ± 2.5 | 0.7 ± 0.3 | 0.2 ± 0.1 |
| Maternal feces | 0.9 ± 0.3 | 0.6 ± 0.2 | 0.5 ± 0.2 | 0.7 ± 0.2 | 0.6 ± 0.1 | 0.6 ± 0.1 | 0.8 ± 0.2 | 2.8 ± 2.0 | 0.7 ± 0.2 |
| Maternal oral | 6.2 ± 3.5 | 8.1 ± 5.6 | 9.1 ± 5.1 | 0.4 ± 0.1 | 0.3 ± 0.1 | 0.3 ± 0.1 | 0.5 ± 0.2 | 0.3 ± 0.1 | 0.2 ± 0.1 |
| Milk | 4.9 ± 3.3 | 1.2 ± 0.3 | 1.1 ± 0.4 | 0.4 ± 0.1 | 0.4 ± 0.1 | 0.4 ± 0.1 | 0.5 ± 0.2 | 0.5 ± 0.1 | 0.3 ± 0.1 |
| Unknown | 87.0 ± 6.8 | 88.2 ± 6.0 | 87.3 ± 6.0 | 97.8 ± 0.4 | 97.9 ± 0.8 | 98.2 ± 0.3 | 95.1 ± 2.8 | 95.7 ± 2.0 | 98.5 ± 0.2 |
1
Values are means ± SEM; infant feces, n = 149; infant oral, n = 151; maternal feces, n = 162; maternal oral, n = 182; milk, n = 147.