How Humidity Affects Virus Survival on Surfaces
Author Information
Author(s): Parry-Nweye Eloise, Liu Zhenlei, Dhaouadi Yousr, Guo Xin, Huang Wenfeng, Zhang Jianshun, Ren Dacheng
Primary Institution: Syracuse University
Hypothesis
How does humidity influence the persistence of viruses on fomites in indoor environments?
Conclusion
Higher humidity levels can significantly reduce the infectivity of aerosolized viruses on surfaces, with a notable V-shaped relationship observed.
Supporting Evidence
- The infectivity of aerosolized Phi6 decreased by ≥ 1 log10 as humidity increased from 25% to 75%.
- At 85% humidity, the infectivity increased again, creating a V-shaped curve.
- Material properties impact viral persistence, but humidity has a more significant effect.
Takeaway
This study shows that viruses can survive longer on surfaces in dry conditions, but too much humidity can make them less infectious.
Methodology
The study used a full-scale environmental chamber to test the effects of different humidity levels on the infectivity of aerosolized Phi6.
Limitations
The study used Phi6 as a surrogate for SARS-CoV-2, which may not fully replicate the behavior of the actual virus.
Statistical Information
P-Value
<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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