Rumor identification: New coronaviruses have the potential to survive for up to 5 days when conditions are right after leaving the body. Rumor analysis: 1. Viruses are smaller than cells and contain only one nucleic acid (DNA or RNA), so it is difficult for them to survive independently. After leaving the host, the virus does not die immediately, it survives for a while, and the survival time is different at different temperatures and in different humidity of the air. 2. The survival time of novel coronavirus in dry environment is only 48 hours, and the activity decreases significantly after 2 hours in the air. Some studies have shown that at a temperature of 22℃-25℃ and a relative humidity of 40%-50%, the virus can remain viable on the surface of smooth objects for 5 days, but at higher temperatures and higher relative humidity, such as 38℃ and relative humidity >95%, the virus loses its viability rapidly. Special note: The new coronavirus is afraid of high temperature, as long as the temperature reaches 56℃, it loses its activity after 30 minutes. So usually you can heat it at 56℃ for 30 minutes or irradiate it with UV lamp for 30 minutes to inactivate the new coronavirus effectively. In addition, research has confirmed that 75% ethanol has a significant inactivating effect on the virus, so if you want to disinfect household items, you can choose medical alcohol is more convenient.