Susceptibility of Bacillus anthracis to eleven antimicrobial agents including novel fluoroquinolones and a ketolide - PubMed (original) (raw)

doi: 10.1093/jac/dkg364. Epub 2003 Jul 15.

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Susceptibility of Bacillus anthracis to eleven antimicrobial agents including novel fluoroquinolones and a ketolide

John Frean et al. J Antimicrob Chemother. 2003 Aug.

Abstract

Objectives: To determine the susceptibility of southern African strains of Bacillus anthracis to new, investigational agents as well as conventional antibiotics.

Materials and methods: The MICs of 26 isolates of B. anthracis from South Africa and Zimbabwe, as well as the Sterne vaccine strain and a type culture strain, were determined by agar dilution.

Results: The most active antimicrobial agents were the novel ketolide ABT 773, new and conventional fluoroquinolones, and doxycycline; macrolides were intermediately active. The lack of activity of extended-spectrum cephalosporins against B. anthracis was confirmed.

Conclusions: Susceptibility to conventional antibiotics was in keeping with previous studies. Two new fluoroquinolones and a ketolide showed promising in vitro activity that would support their further evaluation in animal models of anthrax.

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