Table 3.

Dynamics of colonisation by site and time point.

Birth n = 750; 253 colonised mothers (% total)
Mother and infant colonised	146 (19.5% total; 57.7% born to colonised mothers)
Infants colonised, mothers not colonised	40 (5.3)
Total colonised infants	186 (24.8)
Mothers colonised, infants not colonised	107 (14.3)
Neither mother nor infant colonised	457 (60.9)
Site of colonisation at birth (% colonised infants)
Nasopharyngeal and rectal	96 (51.6)
Rectal only	68. (36.6)
Nasopharyngeal only	22 (11.8)
Site of colonisation day 6–9; n = 722 (% of the 181 colonised infants)
Infant rectal colonisation only	95 (52.5)
Infant nasopharyngeal colonisation only	29 (16.0)
Infant nasopharyngeal and rectal	57 (31.5)
Site of colonisation day 60–89; n = 684 (% the 94 colonised infants)
Infant rectal colonisation only	57 (60.6)
Infant nasopharyngeal colonisation only	26 (27.7)
Infant nasopharyngeal and rectal	11 (11.7)