# Original # There were sporadic cases in Shanghai and other places in the early stage, and the relevant departments took resolute and effective actions at once, which did not lead to the spread of the virus. The life span of the virus was prolonged, and some frozen products imported from overseas were still deteriorating, and some infected people were harmed by carelessness. At present, the relevant parties actively take corresponding countermeasures to continuously improve their understanding and improve measures to effectively block the spread. Therefore, it is the responsibility of everyone to take preventive measures # Ling Yuanchang #