Not easily culturable but well viable & used in epidemiology are/is:
A. Staph
B. Mycobacterium TB C. E. Coli
D. Salmonella
E. Streptococci
Ans. B. Mycobacterium TB
• Staph aureus grows
rapidly in ordinary media with temperature range of 10-42°C.
• Mycobacterium tuberculosis grows very slowly. coloniesappear only in 2 weeks,
sometime delayed to 6-8 wks. Cultures remain viable for 6-8 months and
may be stored for 2 yrs in deep freeze at temperature 20°C.
• E. Coli grows rapidly in culture media
* Viable but not cultivable organism:
----Mycobaeterium.Leprae
-— Trepenoma pallidum
