The Effect of Nanosilver Paint on Reducing Fungal Contamination in Hospitals


1 Master of Environmental Health, Qom University of Medical Sciences, Qom, Iran

2 Associate Professor, Department of Environmental Health Engineering, Tehran University of medical Sciences, Tehran, Iran

3 Assistant Professor of Infectious Diseases, Tehran University of medical Sciences

4 Instructor, Department of Public Health, Qom University of Medical Sciences, Qom, Iran


Background & Aims: Nanosilver-based paint is a new technology with antimicrobial and antifungal
characteristics. These characteristics were investigated in this study with regard to fungal contamination in
Method: Regarding hospitalization of transplant patients and their sensitivity to hospital infections, two
similar rooms were selected in nephrology ward. One of them was painted with Nanosilver paint and the
other one with ordinary paint. Sampling was done via Swap Sterile and Open Plate. A total of 350 samples
was obtained and colony-forming units in Open Plate and Surface Culture methods in case and control
rooms were compared.
Results: Mean colony- forming units in case and control groups showed significant difference in both open
plate and surface culture methods (P<0.000, P<0.001 respectively). In studying the effect of time passing on
the effectiveness of nanosilver paint, P values were 0.165 and 0.644 for open plate and surface culture
methods respectively.
Conclusion: It was found that Nanosilver paint is indeed effective in reducing both air and surface fungal
contamination, but it is more effective on surface. Moreover, the passing of time had no effect on the
effectiveness of the paint.