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  • Title: Distribution and antibacterial susceptibility of macrolide resistance genotypes in Streptococcus pneumoniae: PROTEKT Year 5 (2003-2004).
    Author: Farrell DJ, Couturier C, Hryniewicz W.
    Journal: Int J Antimicrob Agents; 2008 Mar; 31(3):245-9. PubMed ID: 18178388.
    Abstract:
    The distribution and antibacterial susceptibility of macrolide resistance genotypes among 7083 Streptococcus pneumoniae isolates collected worldwide during 2003-2004 from patients with community-acquired respiratory tract infections, including patients within 48h of admission to hospital, were analysed. The overall rate of erythromycin resistance was 37.2% (intercountry range <10% to >50%). The most common resistance mechanism globally was erm(B) (55.0% of erythromycin-resistant S. pneumoniae (ERSP)), followed by mef(A) (30.6%) and erm(B)+mef(A) (12.0%). Genotype distribution varied by age group (P<0.0001); erm(B)+mef(A) was more prevalent (21.8% of isolates) among patients 0-2 years of age than among other age groups (P<0.001). The prevalence of tetracycline resistance among mef(A) isolates varied between different countries. Of the erm(B)+mef(A) strains, 43.5% were resistant to amoxicillin/clavulanic acid. Most ERSP isolates were susceptible to levofloxacin (98.3%) and telithromycin (99.4%).
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