Evaluation of the killing effect of an air disinfection machine on high concentration of viral aerosols
Objective To observe the inactivation effect of an air disinfection machine on high concentration of viral aerosols in indoor air.Methods A microbial aerosol generator was used to generate high concentrations of viral aerosols of Escherichia coli phage MS2 with concentrations of 1.04×1011,2.28×109,and 3.50×108 pfu/m3 in an aerosol chamber.A biological air sampler was used to collect the air in the room before and after disinfection to evaluate the inactivation effect of the air disinfection machine on viral aerosols.Results After the air disinfection machine running for 10 min,the killing rates of different concentrations of Escherichia coli MS2 aerosols were all>70.00%.After the air disinfector running for 30 min,the killing rates of different concentrations of Escherichia coli MS2 aerosols were all>99.99%.Conclusion This air disinfection machine has a good effect on inactivating high concentration of viral aerosols in enclosed spaces.
air disinfection machineviral aerosolEscherichia coli phagebiological air sampler
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