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Table 4 Distribution of capsular genotypes and pilus islands of 72 GBS isolates

From: Prevalence, population structure, distribution of serotypes, pilus islands and resistance genes among erythromycin-resistant colonizing and invasive Streptococcus agalactiae isolates recovered from pregnant and non-pregnant women in Isfahan, Iran

Capsular type Colonizing Invasive Total
Ia 11 (30.5) 4 (11.1) 15 (20.8)
Ib 6 (16.6) 5 (13.8) 11 (15.2)
II 2 (5.5) 4 (11.1) 6 (8.3)
III 8 (22.2) 11 (30.5) 19 (26.3)
IV 3 (8.3) 4 (11.1) 7 (9.7)
V 6 (16.6) 5 (13.8) 11 (15.2)
VI 1 (2.7) 1 (1.3)
VII 2 (5.5) 2 (2.7)
VIII
Pilus type
 PI-1 19 (52.7) 8 (22.2) 27 (37.5)
 PI- 1 + 2a 7 (19.4) 15 (41.6) 22 (30.5)
 PI-1 + 2b 9 (25) 12 (33.3) 21 (29.1)
 PI-2b 1 (2.7) 1 (2.7) 2 (2.7)