Transfer of Phi6 Bacteriophage Between Human Skin and Surfaces Common to Consumer‐Facing Environments
Journal of Applied Microbiology(2022)
Abstract
Aims This study aimed to determine the extent of Phi6 (phi 6) transfer between skin and surfaces relevant to consumer-facing environments based on inoculum matrix, surface type and contact time. Methods and Results phi 6 transfer rates were determined from skin-to-fomite and fomite-to-skin influenced by inoculum matrix (artificial saliva and tripartite), surface type (aluminium, plastic, stainless steel, touchscreen, vinyl and wood) and contact time (5 and 10 s). Significant differences in estimated means were observed based on surface type (both transfer directions), inoculum matrix (skin-to-fomite) and contact time (both transfer directions). During a sequential transfer experiment from fomite-to-skin, the maximum number of consecutive transfer events observed was 3.33 +/- 1.19, 2.33 +/- 1.20 and 1.67 +/- 1.21 for plastic, touchscreen and vinyl, respectively. Conclusions Contact time significantly impacted phi 6 transfer rates, which may be attributed to skin absorption dynamics. Surface type should be considered for assessing phi 6 transfer rates. Significance and Impact of the Study Although the persistence of phi 6 on fomites has been characterized, limited data are available regarding the transfer of phi 6 among skin and fomites. Determining phi 6 transfer rates for surfaces in consumer-facing environments based on these factors is needed to better inform future virus transmission mitigation strategies.
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Key words
fomite,Phi6,SARS-CoV-2,surrogate,transfer
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