Bactericidal Efficacy of a Disinfectant Composed of Povidone-iodine Against Clostridium Perfringens and Mycobacterium Fortuitum

Clostridium perfringens (C. perfringens) and Mycobacterium fortuitum (M. fortuitum) are associ- ated with considerable diseases in animals and human. In this study, the disinfection efficacy of a commercial disin- fectant composed to povidone-iodine (PVI) was evaluated against C. perfringens and M. fortuitum. A bactericidal efficacy test by broth dilution method was used to determine the lowest effective dilution of the disinfectant following exposure to C. perfringens and M. fortuitum for 30 min at 4 o C. The disinfectant and test bacteria were diluted with hard water (HW) or organic matter suspension (OM) according to treatment condition. On HW condition, the bacte- ricidal activity of the disinfectant against C. perfringens and M. fortuitum was 50 and 80 fold dilutions, respectively. On OM condition, the bactericidal activity of the disinfectant against both C. perfringens and M. fortuitum was 15 fold dilutions. As the disinfectant composed to PVI possesses bactericidal efficacy against C. perfringens and M. fortui- tum, the disinfectant solution can be used to control the spread of bacterial diseases.