Embil J A, Belgaumkar T K, MacDonald S W
Scand J Infect Dis. 1978;10(1):50-2. doi: 10.3109/inf.1978.10.issue-1.11.
An intramural population of 2480 neonates (88.7% of total births at the Grace Maternity Hospital, Halifax, Canada) was studied by rectal swabs collected within one hour after birth. Group B streptococci were recovered from 54 (21.7/1000 livebirths). Of these, 12(4.8/1000 livebirths) became symptomatic; all were term infants and none was born after prolonged membrane rupture. Two infants with pneumonia (0.8/1000) had severe life threatening illness; one was infected with group B streptococcus, serotype III, the other with both serotypes Ia and II. Serotyping of isolates showed equal distribution of types Ia, Ib, II and III but the symptomatic group showed a predominance of serotype III.
对加拿大哈利法克斯格蕾丝妇产医院出生的2480名新生儿（占该医院总出生人数的88.7%）进行了一项院内心研究，在出生后一小时内通过直肠拭子采集样本。从54名新生儿（每1000例活产中有21.7例）中分离出B族链球菌。其中，12名新生儿（每1000例活产中有4.8例）出现症状；均为足月儿，且无胎膜早破后出生的情况。两名患肺炎的婴儿（每1000例中有0.8例）患有严重的危及生命的疾病；一名感染了III型B族链球菌，另一名感染了Ia型和II型。分离株的血清分型显示Ia型、Ib型、II型和III型分布均匀，但出现症状的组中III型占优势。
