ABSTRACT
Rapidly growing mycobacteria (RGM) are ubiquitous environmental organisms capable
of causing a wide variety of infections in humans. The prevalence of RGM infections
appears to be increasing, although exact incidence rates are unknown. Although some
risk factors for pulmonary RGM infection have been determined, the specific host factors
predisposing to disease in the majority of cases are not clear. Significant advances
in molecular methods of mycobacterial identification have led to isolation of more
varieties, changes in taxonomy, and more rapid and accurate diagnosis of RGM from
clinical isolates. Despite significant advances in the field, diagnosing and treating
RGM pulmonary infections remain complicated. Current guidelines are based on the most
commonly encountered NTM. Their applicability to less frequent RGM isolates has not
been definitively established. Treatment often requires multiple antimicrobial agents
for prolonged periods of time, with varying degrees of success and significant associated
morbidity.
KEYWORDS
Rapidly growing mycobacteria (RGM) - nontuberculous mycobacteria (NTM) - diagnosis
- treatment
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Kenneth N OlivierM.D. M.P.H.
Laboratory of Clinical Infectious Diseases, National Institute of Allergy and Infectious
Diseases
National Institutes of Health, 9000 Rockville Pike, Bldg. 10, Rm. 11N234, Bethesda,
MD 20892-1888
Email: olivierk@niaid.nih.gov