The research also found that Corona patients were being found in several countries outside of China in early February but had no knowledge of the epidemic link. At the same time, very few people were being investigated. There were many reasons for this, such as infection with no symptoms or mild symptoms, case definition, there were many factors that did not catch the infection of people. Until a critical condition patient was tested, the cluster could not be detected if there could be corona infection. The same was seen in Italy, when the first serious patient was found there on 21 February, and in a few days, the symptoms were found in many people without testing. Not only did some investigative reports come out wrong but after some time the information also started getting weak and qualityless which made it difficult to understand the infection expansion. At the same time, in the end of February, when many countries became Epicenters, at the same time, worldwide travel was banned so that cases coming from outside in their countries could be stopped. This was particularly banned in Europe and North America. This not only disrupted the flight network but also diverted attention from the prevention of Kovid-19 cases spreading within the country. At the same time, in the initial phase the cases without investigation made the problem huge. At the same time, we should also keep in mind that even though Wuhan was an Epicenter and there was a ban, this step did not stop the other in the world from becoming an Epicenter. If importation means that the rate of investigation of cases coming from outside the country was good and strong, then this situation probably would not have happened. Now that many countries are ending the lockdown and are taking pandemic activities, they should remember the first lesson of Kovid-19 so that the second wave does not ruin us.