Table 1. Antimicrobial resistance of invasive non Hib strains isolated in Ontario, 2010–2014 (n = 664).

	a,e,f serotype					Non-typeable
Antibiotic	N	MIC50	MIC90	Range	%NS #	N	MIC50	MIC90	Range	%NS #
Amoxicillin-clavulanate	134	≤2	≤2	≤2–4	2.2	529	≤2	≤2	≤2–8	2.6
Ampicillin	134	≤0.12	1	≤0.012 -- >4	6.7	530	0.25	1	≤0.12–4	26.4
Ampicillin-sulbactam	134	≤1	≤1	≤1 -- >2	2.2	529	≤1	2	≤1–2	7.5
Cefaclor	134	≤4	8	≤4 -- >16	3.7	524	≤4	8	≤4–8	11.4
Ceftriaxone	134	≤0.03	0.06	≤0.03–1	0	530	≤0.03	≤0.03	≤0.03–0.25	0
Clarithromycin	134	8	16	≤0.12–16	14.2	530	8	8	≤0.12 -- >16	30
Levofloxacin	134	≤0.03	≤0.03	≤0.03–1	0	530	≤0.03	≤0.03	≤0.03 -- >4	0.2*
Meropenem	134	≤0.06	≤0.06	≤0.06–0.5	0	530	≤0.06	0.12	≤0.06–0.5	0

*indicates resistance breakpoints have not been established

#indicates both resistance and intermediate category. Non-susceptible and intermediate (= NS)