Spectrum and potency of ceftaroline against leading pathogens causing community-acquired respiratory tract and skin and soft tissue infections in Latin America, 2010

Braz J Infect Dis. 2013 Sep-Oct;17(5):564-72. doi: 10.1016/j.bjid.2013.02.008. Epub 2013 Jul 31.

Abstract

Ceftaroline, the active metabolite of the prodrug ceftaroline fosamil, is a cephalosporin with in vitro bactericidal activity against Gram-positive organisms, including methicillin-susceptible and -resistant Staphylococcus aureus, β-haemolytic and viridans group streptococci, and Streptococcus pneumoniae, as well as common Gram-negative organisms. In this study a total of 986 isolates collected in 2010 from patients in 15 medical centers in five Latin American countries from the Assessing Worldwide Antimicrobial Resistance Evaluation Program were identified as community-acquired respiratory tract or skin and soft tissue infection pathogens. Ceftaroline was the most potent agent tested against S. pneumoniae with a MIC90 value (0.12μg/mL) that was eight-fold lower than ceftriaxone, levofloxacin, and linezolid. Its spectrum of coverage (100.0% susceptible) was similar to tigecycline, linezolid, levofloxacin and vancomycin. Against Haemophilus influenzae and Moraxella catarrhalis, ceftaroline was the most active agent tested. The activity of ceftaroline against S. aureus (including MRSA) was similar to that of vancomycin and tetracycline (MIC90, 1μg/mL) and linezolid (MIC90, 2μg/mL). The β-haemolytic streptococci exhibited 100.0% susceptibility to ceftaroline. Ceftaroline activity against Escherichia coli, Klebsiella spp., and Enterobacter spp. was similar to that of ceftriaxone and ceftazidime. These parenteral cephalosporin agents have potent activity against non-extended-spectrum β-lactamase-phenotype strains, but are not active against extended-spectrum β-lactamase-phenotype strains. These results confirm the in vitro activity of ceftaroline against pathogens common in community-acquired respiratory tract and skin and soft tissue infection in Latin America, and suggest that ceftaroline fosamil could be an important therapeutic option for these infections.

Keywords: AWARE; Ceftaroline; S. aureus; S. pneumoniae.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Anti-Bacterial Agents / pharmacology*
  • Ceftaroline
  • Cephalosporins / pharmacology*
  • Community-Acquired Infections / drug therapy
  • Community-Acquired Infections / microbiology
  • Gram-Negative Bacteria / classification
  • Gram-Negative Bacteria / drug effects*
  • Gram-Negative Bacteria / isolation & purification
  • Gram-Positive Bacteria / classification
  • Gram-Positive Bacteria / drug effects*
  • Gram-Positive Bacteria / isolation & purification
  • Humans
  • Latin America
  • Microbial Sensitivity Tests
  • Respiratory Tract Infections / drug therapy
  • Respiratory Tract Infections / microbiology
  • Skin Diseases, Bacterial / drug therapy
  • Skin Diseases, Bacterial / microbiology
  • Soft Tissue Infections / drug therapy
  • Soft Tissue Infections / microbiology

Substances

  • Anti-Bacterial Agents
  • Cephalosporins