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  • Title: Susceptibility of Group A Streptococcus to Antimicrobial Agents in Northern Israel: A Surveillance Study.
    Author: Chazan B, Raz R, Edelstein H, Kennes Y, Gal V, Colodner R.
    Journal: Microb Drug Resist; 2015 Oct; 21(5):551-5. PubMed ID: 26430943.
    Abstract:
    BACKGROUND: Resistant pathogens are an increasing threat affecting millions of people globally. More complicated patients are presented with pathogens harboring new resistance mechanisms, while the pipeline of new antimicrobials hardly proposes solutions. In such a scenario, more severely ill patients remain with no adequate treatment to offer. In addition, massive misuse of antimicrobials, including excessive length of treatment or wrong dosage, also contributes to increasing the rate of pathogens resistance to antimicrobials. Isolation of Streptococcus pyogenes (Group A Streptococcus-GAS) is the main indication for antibiotic treatment to patients diagnosed with acute tonsillitis. Hence, GAS resistance to antibiotics requires periodic monitoring. OBJECTIVES: To assess susceptibility rates of GAS to penicillin, macrolides, clindamycin, and tetracycline in northern Israel and to compare the findings to the high antimicrobial susceptibility of GAS isolates reported in the same region in 2004 and to other geographical areas. METHODS: Throat samples from 300 outpatients were collected and cultured at the regional laboratory of Emek Medical Center during September to October 2011. RESULTS: In 300 samples, the susceptibility rates of GAS to penicillin, erythromycin, azithromycin, clindamycin, and tetracycline in northern Israel still remain very high. CONCLUSIONS: Continuous control of antimicrobials usage and periodic surveillance of susceptibility rates, together with educational programs and appropriate and targeted treatment protocols, are essential and highly recommended to keep these high susceptibility rates for as long as possible.
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