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Background    Mycobacterium ulcerans  ( M. ulcerans ) is the causative agent of Buruli Ulcer (BU) disease. In order to inhibit the growth of the microbial contaminants during culture of  M. ulcerans,  it is necessary to decontaminate BU samples with effective chemical agents. This study aimed at investigating some selected chemicals as potential decontamination agents for the isolation of  M. ulcerans  from swabs.    Results  Povidone iodine at 0.5 and 1% exhibited the lowest contamination and recovery rate for microbial contaminants and  M. ulcerans.  The most effective decontamination method was the protocol using 2% cetylpyridinium chloride/4% sodium chloride (recovery rate = 53%, contamination rate = 14%). The observed difference between the recovery rate of 2% CPC/4% NaC and the other protocols was however not statistically significant ( p  = 0.76).    Conclusions  Two percent (2%) cetylpyridinium chloride/4% sodium chloride can be conveniently used as an alternative decontamination method for the isolation of  M. ulcerans  from swabs.

Evaluating decontamination protocols for the isolation of Mycobacterium ulcerans from swabs