Evaluation of antimicrobial susceptibilities of rapidly growing mycobacteria by Sensititre RAPMYCO panel
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This study used Sensititre RAPMYCO to test the activities of amikacin, cefoxitin, ciprofloxacin, clarithromycin, doxycycline, imipenem, linezolid, sulfamehoxazole, tigecycline and tobramycin against 25 clinical isolates of rapidly growing mycobacteria (RGM), including the common disease producing species Mycobacterium abscessus, Mycobacterium chelonae, Mycobacterium fortuitum and Mycobacterium peregrinum. Analysis of the four different RGM species showed that isolates of M. fortuitum and M. peregrinum were more susceptible than M. abscessus and M. chelonae. Different antimicrobials showed a variable sensitivity in all strains. Therefore, each species and strain must be individually evaluated, and it is always advisable to perform in vitro sensitivity tests before the treatment of infections due to RGM.