Mycobacterium cookii
Mycobacterium cookii is a species of the phylum Actinomycetota, belonging to the genus Mycobacterium.
Description
Gram-positive, nonmotile and polymorphic acid-fast rods. Forms clumps, but not cords or cross bands. Does not form spores, capsules and aerial hyphae.Colony characteristics
Physiology
- Slow growth on Löwenstein-Jensen medium or Middlebrook 7H10 agar at 31 °C. No growth at 37 °C, 42 °C or 45 °C.
- Most of the strains are susceptible to ethambutol, isoniazid, streptomycin, and rifampin.
- Phylogenetic position between the slowly growing pathogenic species and the saprotrophic rapidly growing species by partial 16S rDNA sequencing.
Pathogenesis
- Not pathogenic for humans, mice, guinea pigs and rabbits. Biosafety level 1.
- Provokes a non-specific hypersensitivity reaction to bovine tuberculin.