TABLE 1.

Numbers and percentages of saprophytic, potentially pathogenic, and unidentified mycobacteria

Organisms1-50 CFU · liter−151-50 CFU · liter−1>500 CFU · liter−1
No. of positive samplesa%No. of positive samples%No. of positive samples%
Saprophytic mycobacteria353493200
Potentially pathogenic mycobacteria151541400
Unidentified mycobacteria525115541100
All mycobacteria10278282111
  • a One sample could contain different mycobacterial species.