The viral nucleic acid currently detected on the door handle is not an intact live virus. According to current research, the virus only survives to spread the disease, and the new coronavirus in the air after exposure to 2 hours, the activity is significantly reduced, whether it is infectious need further research to confirm. In the period of the epidemic, people should pay attention to diligent hand washing, daily to do diligent hand washing in hand washing must use running water to beat the soap to be in about 20 seconds, to be able to remove all the bacteria from the hands, go out can wear gloves to protect.