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Table 3 Serotype distribution of GBS isolated from pregnant women and their newborns and vertical transmission rate at Hawassa University Comprehensive Specialized Hospital, November 2014–March 2015 (n = 70)

From: Prevalence of group B streptococcus among pregnant women and newborns at Hawassa University comprehensive specialized hospital, Hawassa, Ethiopia

Serotype Pregnant women Newborns Total VTR
Ia 9/44 (20.5%) 4/26 (15.4%) 13/70 (18.6%) 4/9 (44.4%)
Ib 5/44 (11.4%) 4/26 (15.4%) 9/70 (12.9%) 4/5 (80%)
II 14/44 (31.8%) 10/26 (38.5%) 24/70 (34.3%) 10/14 (71.4%)
III 6/44 (13.6%) 2/26 (7.7%) 8/70 (11.4%) 2/6 (33.3%)
V 8/44 (18.2%) 6/26 (23.1%) 14/70 (20%) 6/8 (75%)
NT 2/44 (4.6%) 0/26 (0) 2/70 (2.9%) 0/2 (0)
Total 44 26 70 26/44 (59.1)
  1. VTR vertical transmission rate, NT non typeable, I, II,I II.V=Serotypes