Health Dictionary
Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.
Mycobacterium hassiacum
Introduction
Mycobacterium hassiacum
Description
Description
Gram-positive, nonmotile, and partial acid-fast rods.
Colony characteristics
- Yellow, scotochromogenic, smooth and slimy (in dense growth) colonies (diameter 2-5mm). Distinct and drier colonies at temperatures between 40° and 65°C.
Physiology
- Aerobic and thermophilic rapid growth on Löwenstein-Jensen medium at a temperature range between 30°C and 65°C.
- Susceptible to streptomycin, ethambutol, cycloserine, ciprofloxacin and clarithromycin.
- Resistant to isoniazid, rifampin and prothionamide.
Differential characteristics
- Closely related to the slowly growing species M. xenopi.
- Easy to distinguish from other mycobacteria by its growth at 65°C
- Inability to utilise any sugar
- Ability to split benzamide.
Pathogenesis
Pathogenesis
- First isolated from urine in the German province of Hessen.
- Biosafety level 1
Type Strain
Type Strain
Strain 3849 = CCUG 37519 = CIP 105218 = DSM 44199 = JCM 12690.
References
References
- Schröder et al. 1997. Mycobacterium hassiacum sp. nov., a new rapidly growing thermophilic mycobacterium. Int. J. Syst. Bacteriol., 47, 86-91.
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