Evaluation of the Antibacterial Efficacies of Hand wash Disinfectants on Pathogenic Bacterial Hand Swab Isolates of Health workers in Ilorin, Nigeria


Hands are the most implicated in the transmission and spread of pathogens that causes disease. Hand hygiene has been said to be the most important way to avoid these infections. Hand washing with the use of hand wash is one of the ways to tackle the barriers to efficient hand hygiene. This study assessed the efficacy of seven popular brands of Hand washes (HW): DET, SAV, CHE, VIS, NIV, DOV and CAR (all abreviations in full for the first time) against some clinically important bacterial pathogens: Staphylococcus aureus, Pseudomonas aeruginosa, Escherichia coli and Proteus mirabilis recovered from hands of health care workers. The antibacterial susceptibility and minimum inhibitory concentration of the hand washes was determined using the agar diffusion and broth dilution method, respectively. Each brand showed different activities against the isolates. VIS had the highest inhibitory effect against all organisms it was tested on, while SAV was the least effective. S. aureus was the most susceptible test organism, with the highest susceptibility to CAR (32.5 mm). P. mirabilis was most resistant, with the highest resistance to DET (9.0 mm). Antibacterial activity of the hand wash decreased with increased dilution. The minimum bactericidal concentration (MBC) was obtained for all the hand washes when not diluted. It is, therefore, recommended that the dilution of hand wash which is a commonly done in most households, hospitals, offices and eateries should be discontinued as these products are not active when diluted.



Hand wash,, Hand Hygiene,, pathogens,, Nosocomial infection