novel coronavirus pneumonia has been confirmed by Madonna University in the past weekend, according to the US cable day report. Of which, 20 cases were newly diagnosed on Saturday, and 30 cases were added on Sunday. At present, the total number of cases in this school has reached 448 cases. < p > < p > Notre Dame University in Indiana, USA, stopped all offline courses last week because hundreds of teachers and students had been diagnosed with new coronavirus in just over 10 days since the students returned to school. Notre Dame University points out that most of the infected people are senior students living outside the school. These students attend the party without maintaining social distance and wearing masks, resulting in infection. < p > < p > also last week, the University of North Carolina at Chapel Hill in the United States has also changed its undergraduate courses to online teaching, which has attracted wide attention from all walks of life. The reason is that, in a short week after the beginning of the school, there were four cluster infection incidents. At present, the United States has a number of colleges and universities campus epidemic, as the University was forced to resume online teaching, the traditional school season has changed.