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  • Title: Antimicrobial activity of dalbavancin tested against Gram-positive clinical isolates from Latin American medical centres.
    Author: Gales AC, Sader HS, Jones RN.
    Journal: Clin Microbiol Infect; 2005 Feb; 11(2):95-100. PubMed ID: 15679482.
    Abstract:
    The activity of dalbavancin, a new semi-synthetic lipoglycopeptide antibiotic, was evaluated in comparison with other antibacterial agents against 1229 Gram-positive organisms collected from medical centres in Latin America. Dalbavancin was the most potent compound tested against isolates of Staphylococcus aureus (MIC(50), 0.06 mg/L) and coagulase-negative staphylococci (MIC(50), 0.03 mg/L), independently of methicillin susceptibility. Dalbavancin inhibited all Streptococcus pneumoniae isolates at </= 0.06 mg/L. Dalbavancin also demonstrated excellent activity against beta-haemolytic (MIC(50), </= 0.008 mg/L) and viridans group (MIC(50), 0.016 mg/L) streptococci. All vancomycin-susceptible Enterococcus spp. isolates were inhibited by dalbavancin at </= 0.25 mg/L, but some vancomycin-resistant Enterococcus spp. isolates were only inhibited by dalbavancin levels of >/= 8 mg/L. Dalbavancin exhibited excellent activity against isolates of Corynebacterium spp. and Listeria spp. Dalbavancin may provide an important therapeutic option for Gram-positive infections, excluding those caused by enterococci with VanA-type resistance.
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