Evaluation of the survivability of MS2 viral aerosols deposited on filtering face piece respirator samples incorporating antimicrobial technologies
| Autor: | Ronald E. Shaffer, Samy Rengasamy, Edward M. Fisher |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
decontamination efficacy
medicine.medical_specialty Time Factors business.product_category Respiratory Protective Device survivability Epidemiology viruses Viral Plaque Assay Article medicine Humans Potential source Food science Respirator virus aerosol Levivirus Log10 reduction Aerosols Antiinfective agent Microbial Viability Ventilators Mechanical business.industry Health Policy Temperature Public Health Environmental and Occupational Health respirator Humidity Antimicrobial Surgery Disinfection Nebulizer Infectious Diseases Antimicrobial technology business Disinfectants |
| Zdroj: | American Journal of Infection Control |
| ISSN: | 0196-6553 |
| Popis: | Background Respiratory protective devices exposed to pathogenic microorganisms present a potential source of transmission of infection during handling. In this study, the efficacy of 4 antimicrobial respirators to decontaminate MS2, a surrogate for pathogenic viruses, was evaluated and compared with control N95 filtering face piece respirators, which did not contain any known antimicrobial components. Methods MS2 containing droplet nuclei were generated using a Collison nebulizer and loaded onto respirator coupons at a face velocity of 13.2 cm/seconds for 30 minutes. The coupons were incubated at 2 different temperature and relative humidity (RH) conditions and analyzed for viable MS2 at different time intervals. Results Results showed that log10 reduction of MS2 was not statistically significant (P > .05) between the control and antimicrobial respirator coupons, when stored at 22°C and 30% RH up to 20 hours. Coupons from 1 of the 4 antimicrobial respirators showed an average MS2 log10 reduction of 3.7 at 37°C and 80% RH for 4 hours, which was statistically significant (P ≤ .05) compared with coupons from the control respirators. Conclusion Results from this study suggest that MS2 virus decontamination efficacy of antimicrobial respirators is dependent on the antimicrobial agent and storage conditions. |
| Databáze: | OpenAIRE |
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