Retention of E. coli and water on the skin after liquid contact.
| Autor: | Pitol AK; Eawag, Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland.; Laboratory of Environmental Chemistry, School of Architecture, Civil, and Environmental Engineering (ENAC), École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland., Kohn T; Laboratory of Environmental Chemistry, School of Architecture, Civil, and Environmental Engineering (ENAC), École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland., Julian TR; Eawag, Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland.; Swiss Tropical and Public Health Institute, Basel, Switzerland.; University of Basel, Basel, Switzerland. |
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| Jazyk: | angličtina |
| Zdroj: | PloS one [PLoS One] 2020 Sep 17; Vol. 15 (9), pp. e0238998. Date of Electronic Publication: 2020 Sep 17 (Print Publication: 2020). |
| DOI: | 10.1371/journal.pone.0238998 |
| Abstrakt: | The frequent contact people have with liquids containing pathogenic microorganisms provides opportunities for disease transmission. In this work, we quantified the transfer of bacteria-using E. coli as a model- from liquid to skin, estimated liquid retention on the skin after different contact activities (hand immersion, wet-cloth and wet-surface contact), and estimated liquid transfer following hand-to-mouth contacts. The results of our study show that the number of E. coli transferred to the skin per surface area (n [E. coli/cm2]) can be modeled using n = C (10-3.38+h), where C [E. coli/cm3] is the concentration of E. coli in the liquid, and h [cm] is the film thickness of the liquid retained on the skin. Findings from the E. coli transfer experiments reveal a significant difference between the transfer of E. coli from liquid to the skin and the previously reported transfer of viruses to the skin. Additionally, our results demonstrate that the time elapsed since the interaction significantly influences liquid retention, therefore modulating the risks associated with human interaction with contaminated liquids. The findings enhance our understanding of liquid-mediated disease transmission processes and provide quantitative estimates as inputs for microbial risk assessments. Competing Interests: The authors have declared that no competing interests exist. |
| Databáze: | MEDLINE |
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