Antimicrobial Susceptibilities of 1,730 Haemophilus influenzae Respiratory Tract Isolates in Spain in 1998-1999

Author:

Marco Francesc1,Garcı́a-de-Lomas Juan2,Garcı́a-Rey César3,Bouza Emilio4,Aguilar Lorenzo3,Fernández-Mazarrasa Carlos5,

Affiliation:

1. Microbiology Department, IDIBAPS, Hospital Clinı́c, Barcelona1;

2. Instituto Valenciano de Microbiologı́a, Valencia2;

3. Medical Department, GlaxoSmithKline, Tres Cantos, Madrid3;

4. Microbiology Department, Hospital General Universitario Gregorio Marañón, Madrid4; and

5. Microbiology Department, Residencia Marqués de Valdecilla, Santander,5 Spain

Abstract

ABSTRACT A β-lactamase prevalence of 23% was found among 1,730 Haemophilus influenzae isolates. Ampicillin susceptibility was 70%, and 12% of β-lactamase-negative strains presented diminished susceptibility to ampicillin (BLNAR phenotype). Susceptibility of 90% was found for cefaclor and clarithromycin, whereas it was nearly 100% for cefotaxime, cefixime, azithromycin, and cefuroxime. Ciprofloxacin-resistant (0.1%) and β-lactamase-positive amoxicillin/clavulanate-resistant (BLPACR) phenotypes (0.1%) are anecdotal so far.

Publisher

American Society for Microbiology

Subject

Infectious Diseases,Pharmacology (medical),Pharmacology

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