Table 1 Cohort 1 comprising all respiratory tract isolates (n = 177). The distribution of clinical and laboratory characteristics per study year

Number of isolates

43

52

82

177

igaA1, n (%)

31 (72%)

39 (75%)

51 (62%)

121 (68%)

igaA1 alone, n (%)

14 (33%)

29 (56%)

20 (24%)

63 (36%)

igaA2^a, n (%)

12 (28%)

13 (25%)

30 (37%)

55 (31%)

igaB1^a, n (%)

23 (53%)

15 (29%)

43 (52%)

81 (46%)

igaB2, n (%)

0

0

1 (1.2%)

1 (0.6%)

Age (years), mean (median)

24 (6)

32 (36)

29 (34)

29 (32)

Gender, % female

53%

67%

55%

58%

Primary care referrals, n (%)

31 (72%)

33 (63%)

55 (67%)

119 (67%)

Acute otitis media, n (%)

10 (24%)

8 (15%)

15 (18%)

33 (19%)

Sinusitis, n (%)

5 (12%)

5 (10%)

11 (13%)

21 (12%)

Upper respiratory tract infection, n (%)

17 (41%)

21 (40%)

18 (22%)

56 (32%)

Lower respiratory tract infection, n (%)

7 (17%)

8 (15%)

12 (15%)

27 (15%)

Unclear diagnosis from referral, n (%)

2 (5%)

10 (19%)

26 (32%)

38 (22%)