Potential sources of contamination on textiles and hard surfaces identified as high-touch sites near the patient environmentShow others and affiliations
2023 (English)In: PLOS ONE, E-ISSN 1932-6203, Vol. 18, article id e0287855Article in journal (Refereed) Published
Abstract [en]
The hospital environment represents an important mediator for the transmission of healthcare-associated infections through direct and indirect hand contact with hard surfaces and textiles. In this study, bacteria on high-touch sites, including textiles and hard surfaces in two care wards in Sweden, were identified using microbiological culture methods and 16S rDNA sequencing. During a cross-sectional study, 176 high-touch hard surfaces and textiles were identified and further analysed using microbiological culture for quantification of total aerobic bacteria, Staphylococcus aureus, Clostridium difficile and Enterobacteriacae. The bacterial population structures were further analysed in 26 samples using 16S rDNA sequencing. The study showed a higher frequency of unique direct hand-textile contacts (36 per hour), compared to hard surfaces (2.2 per hour). Hard surfaces met the recommended standard of ≤ 5 CFU/cm2 for aerobic bacteria and ≤ 1 CFU/cm2 for S. aureus (53% and 35%, respectively) to a higher extent compared to textiles (19% and 30%, respectively) (P = 0.0488). The number of bacterial genera was higher on textiles than on the hard surfaces. Staphylococcus (30.4%) and Corynebacterium (10.9%) were the most representative genera for textiles and Streptococcus (13.3%) for hard surfaces. The fact that a big percentage of the textiles did not fulfil the criteria for cleanliness, combined with the higher bacterial diversity, compared to hard surfaces, are indicators that textiles were bacterial reservoirs and potential risk vectors for bacterial transmission. However, since most of the bacteria found in the study belonged to the normal flora, it was not possible to draw conclusions of textiles and hard surfaces as sources of healthcare associated infections. 2023 Nygren et al.
Place, publisher, year, edition, pages
Public Library of Science , 2023. Vol. 18, article id e0287855
Keywords [en]
Bacteria, Cross-Sectional Studies, Hospitals, Humans, Staphylococcus aureus, Textiles, Touch, DNA 16S, aerobic bacterium, Article, bacterial transmission, bacterium culture, Clostridioides difficile, colony forming unit, contamination, controlled study, Corynebacterium, cross-sectional study, disease carrier, DNA sequencing, Enterobacteriaceae, healthcare associated infection, hospital, microbial community, microbial diversity, nonhuman, observational study, population structure, quantitative analysis, risk factor, surface property, Sweden, bacterium, genetics, human
National Category
Microbiology
Identifiers
URN: urn:nbn:se:ri:diva-65729DOI: 10.1371/journal.pone.0287855Scopus ID: 2-s2.0-85164273329OAI: oai:DiVA.org:ri-65729DiVA, id: diva2:1785976
Note
Funding: Vinnova, Sweden’s innovation agency, grant no. 2014-00719
2023-08-072023-08-072024-05-13Bibliographically approved