Wojtasik B, Zbawicka M, Grabarczyk L, et al. (2019) The lethal effect of hydrotechnical concrete on freshwater Bivalvia. Wojtasik B (2021) Method for assessment of biological corrosion of porous structures, including concrete, in particular hydrotechnical concrete. Walton WR (1952) Techniques for recognition of living foraminifera. (2020) Is safeguard compromised? Surgical mouth mask harboring hazardous microorganisms in dental practice. (2021) Cotton and Surgical Face Masks in Community Settings: Bacterial Contamination and Face Mask Hygiene. doi: 10.3934/environsci.2022015ĭelanghe L, Cauwenberghs E, Spacova I, et al. Suitability of Rose Bengal sodium salt staining for visualisation of face mask contamination by living organisms. Colonisation increases with human use and with time.Ĭitation: Kai Kisielinski, Barbara Wojtasik. We therefore conclude that masks are a suitable substrate for the cultivation of germs, even when not worn. The most interesting finding was the ability of microorganisms to penetrate all layers of the mask. A time dependent accumulation was larger on the inside in comparison to the outside of the mask, even if the mask was not worn but only left in the room. The regular deposition of living microorganisms on artificial mask surfaces was more intense in the areas close to the mouth and nose. In order to identify the distribution of living microorganisms on the surface of a mask dependent on exposure time and distance from the human face we conducted a staining study using the bengal rose method. Unworn masks and masks provided to us after having been worn conformable to law (mandatory wearing of masks) served as test objects.
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