Hand dryers in public bathrooms spread bacteria
Scientific studies demonstrate that hand dryers in public restrooms can aerosolize and disperse bacteria into the surrounding environment and onto users.
Multiple studies examine public washroom hygiene and confirm that hand dryers can spread bacteria and generate microbial aerosols, supporting the claim.
Sotiris Vardoulakis, Daniela A. Espinoza Oyarce, Erica Donner. Transmission of COVID-19 and other infectious diseases in public washrooms: A systematic review. 2021. https://doi.org/10.1016/j.scitotenv.2021.149932
Reviews indicate that hand drying systems contribute to microbial aerosolisation in public washrooms.
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M. S. Gião, Sotiris Vardoulakis. Aerosols and Bacteria From Hand Washing and Drying in Indoor Air. 2022. https://doi.org/10.3389/fpubh.2022.804825
Shows that aerosol and bacteria concentrations increase in indoor air during the hand drying process.
Fayza Kouadrı. Microbiological Assessment of the Different Hand Drying Methods and Washroom Environment Cross-Contamination. 2020. https://doi.org/10.1155/2020/8815147
Finds that warm air dryers can act as reservoirs of bacteria and lead to greater environmental contamination compared to paper towels.
Jing Liao, Zhongjian Ling, Yongou Zhang. Indoor particle dispersion due to hand dryer in public washroom: an in silico study. 2023. https://doi.org/10.1038/s41598-023-37804-8
Demonstrates via computational fluid dynamics that high-velocity hand dryer air jets disperse aerosol particles and bacteria onto users and indoor surfaces.
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