Methylobacterium mesophilicum infection: Case report and literature reviewof an unusual opportunistic pathogen

Methylobacterium mesophilicum is a methylotrophic, pink pigmented, gram-neg ative rod that was initially isolated from environmental sources that is be ing increasingly reported as a cause of opportunistic infections in immunoc ompromised hosts. We present the case of an immunocompromised woman who dev eloped a central catheter infection with M. mesophilicum and review the oth er 29 cases reported in the literature, noting that it is frequently resist ant to beta-lactam agents but is generally susceptible to aminoglycosides a nd quinolones.