Comparative study on the survival time of human coronavirus HCoV-229E on the surface of inanimate objects
Objective To compare the survival time of human coronavirus HCoV-229E on different vectors of inanimate object surfaces,and to provide evidence for coronavirus disinfection.Methods Under the conditions of test ambient temperature of(25±1)℃and relative humidity of 55%±10%,the cell inoculation method was used to detect virus survival and the titer of virus suspension reached the national standard,and the survival test of HCoV-229E on different object surfaces was conducted.Results The virus titer on the vectors of paper and cloth decreased rapidly,and was close to 0 after 72 h of instilled contamination of paper and cloth.The virus titer decreased slowly on the plastic vector,and was 0.75 logTCID50/0.1 mL after 5 d.The virus titer on the vectors of stainless steel and glass sheet decreased slowly,and was 1.0 logTCID50/0.1 mL and 0.75 logTCID50/0.1 mL respectively after 4 days,and no live virus was detected on all vectors of inanimate object surfaces after 5 d.Conclusion The survival times of HCoV-229E on different inanimate object surfaces are different,and targeted disinfection of object surfaces and environment should be carried out in actual disinfection work to improve disinfection efficiency.
human coronavirusvectorobject surfacesurvival time
NETL
NSTL
万方数据
