Results: For both stethoscopes and blood pressure cuffs, there was a significant difference between the prevalence of pathogenic micro-organisms presents (P <0.0001), the number of colonies of pathogenic and a-pathogenic micro-organisms (χ2 =679 and degrees of freedom = 1, P <0.0001), the number of Coagulase negative Staphylococus (CoNS) and a-pathogenic micro-organisms (χ2 = 5.79, degrees of freedom = 1, P =0.13) before and after being decontaminated with disinfectant.