Abstract
We tested for antimicrobial susceptibility of 1,317 clinical isolates of Haemophilus influenzae at a pediatric facility during 2004-2008. The percentage distribution of beta-lactamase-non-producing ampicillin (ABPC)-sensitive strain (BLNAS) was 47.8%, that of beta-lactamase-non-producing ABPC-resistant strain (BLNAR) 32.7% that of intermediately resistant strain (BLNAI) 8.9% that of beta-lactamase producing ABPC resistant strain (BLPAR) 6.8% and that of clavulanic acid/amoxicillin resistant strain (BLPACR) 3.7%. BLNAR prevalence was 30% between 2005 and 2008, increasing slowly. Though reduced susceptibility was seen in most beta-lactams, piperacillin and tazobactam/piperacillin showed good susceptibility for H. influenzae. Of 1,317 strains, 83 (6.3%) were serotype b (Hib). The frequency of Hib was high in sterilized site.
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