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. 2023 Mar 13;11(2):e03347-22. doi: 10.1128/spectrum.03347-22

FIG 2.

FIG 2

The impact of efflorescence on the airborne survival of E. coli. CELEBS measurements of the airborne survival of E. coli MRE162 in droplets of PBS at room temperature (18 to 21°C). (A) The relationship between RH and the survival of E. coli MRE162 after 5 min of levitation. The RH range within which the efflorescence threshold for PBS will be crossed is indicated by the blue shaded area. Each point shows the result of an individual measurement. For 3% and 55% RH n = 3, for 30% RH n = 2, for 40%, and 90% RH n = 4, for 50% RH n = 6. (B) The impact of the physical state of the equilibrated particle on the survival of E. coli MRE162 after 10 min of levitation at room temperature. Fast efflorescence RH was set to 21.7% and all particles effloresced within 5 s of generation; slow efflorescence RH was set to 31.7% and all particles effloresced between 7 and 120 s after generation; the aqueous particles the RH was set to 46.7%. Each point shows the result of an individual measurement. The middle line indicates the mean with the error bars showing the standard deviation. n = 3 for all measurements.