Table 2. Antimicrobial susceptibility of 70 invasive H. influenzae.

	MIC50	MIC90	Range	% S	% I	% R
Antimicrobial	(mg/L)	(mg/L)	(mg/L)
Ampicillina	0.25	2	≤0.12–>4	85.7	4.3	10.0
Amoxicillin/clavulanicacidb	≤0.5	2	≤0.5–4	100
Cefuroxime	1	2	≤0.5–8	98.6	1.4
Cefepime	≤0.25	≤0.25	≤0.25–0.25	100
Cefotaxime	≤0.06	≤0.06	≤0.06–0.06	100
Ceftriaxone	≤0.12	≤0.12	≤0.12	100
Imipenem	0.5	1	≤0.12–2	100
Chloramphenicol	≤1	≤1	≤1	100
Tetracycline	≤1	2	≤1–2	100
Ciprofloxacin	≤0.03	≤0.03	≤0.03	100
Cotrimoxazolec	≤0.5	>2	≤0.5–>2	72.9	1.4	25.7
Azithromycin	1	2	≤0.12–>4	98.6		1.4

^aβ-lactamase production: 8.6% (n = 6).

^bThe ratio of amoxicillin/clavulanic acid was 2∶1.

^cThe ratio of cotrimoxazole was 1∶19.