JOURNAL ARTICLE

In vitro activity of tigecycline against 6792 Gram-negative and Gram-positive clinical isolates from the global Tigecycline Evaluation and Surveillance Trial (TEST Program, 2004)

Daryl J Hoban, Samuel K Bouchillon, Brian M Johnson, Jack L Johnson, Michael J Dowzicky et al.
Diagnostic Microbiology and Infectious Disease 2005, 52 (3): 215-27
16105567
Tigecycline, a new glycylcycline antibiotic, has shown promising in vitro activity against many common pathogens, including multidrug-resistant strains. To determine the activity of tigecycline against a broad range of pathogens from diverse populations and geographic areas, the Tigecycline Evaluation and Surveillance Trial (TEST Program) commenced in 2003. This study evaluated the activity of tigecycline and commonly used antimicrobials against 6792 clinical isolates from 40 study centers in 11 countries. Tigecycline was the most active agent tested against Gram-positive facultative species including multidrug-resistant strains. MIC90 results (microg/mL) for tigecycline against Enterococcus faecalis, Enterococcus faecium, Staphylococcus aureus, Streptococcus agalactiae, and Streptococcus pneumoniae were 0.12, 0.12, 0.25, and 0.25 microg/mL, respectively. Tigecycline was active against Enterobacteriaceae with an MIC90 of 1 microg/mL. Haemophilus influenzae was very susceptible to tigecycline with an MIC90 of only 0.25 microg/mL. Pseudomonas aeruginosa was the least susceptible organism tested against tigecycline. Tigecycline appears to be a promising new glycylcycline agent for the treatment of many types of pathogens with varying resistance phenotypes.

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