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Table 2 The distribution of laboratory characteristics per isolation site of the 53 isolates comprising cohort 2

From: Differential distribution of IgA-protease genotypes in mucosal and invasive isolates of Haemophilus influenzae in Sweden

Isolation site Bloodstream CSF Otherb Total
Number of isolates 26 16 11 53
Encapsulated 8 1 6 15
Nonencapsulated 18 15 5 38
igaA1, n (%) 19 (73%) 11 (69%) 6 (55%) 36 (68%)
igaA1 alone, n (%) 16 (62%) 8 (50%) 5 (45%) 26 (49%)
igaA2a, n (%) 7 (27%) 5 (31%) 5 (45%) 17 (32%)
igaB1a, n (%) 1 (4%) 4 (24%) 3 (27%) 8 (15%)
igaB2, n (%) 2 (8%) 1 (6%) 0 3 (6%)
  1. aSome isolates have both the igaA and igaB gene, resulting in a total percentage of > 100%
  2. bAvailable details on all isolates are given in Additional file 1: Table S1