In my opinion, students need to be observed and isolated when returning to school, because these students come from different places and come into contact with different people. When they returned to school, they were not sure which student had the virus, because the virus infected the radio very specially. Wherever the virus carrier goes, the virus may be taken away, so in school, if a student carries this virus, it is likely to cause a cluster infection in this school. Therefore, students need to observe and isolate when they return to school to ensure the safety of other students, be responsible for all students and teachers, and reduce the risk of virus transmission.
Because this virus is invisible and intangible, it only shows symptoms within 14 days after infection, so students should observe the isolation after returning to school to see if there is anything abnormal during this observation and isolation period. If anything goes wrong, they should be quarantined immediately. If students do not observe and isolate after returning to school, it will be a crowded place with untimely ventilation. If a classmate is infected, then.
It has been confirmed that the school will start in the autumn of 2020, and China's epidemic prevention work has achieved great results. However, students still need to observe isolation after returning to school, because the virus spreads very fast. If a student is infected, the impact will be very great. Although we can't control this virus, we should try our best to minimize the infection rate of this virus.
Therefore, after the start of school, students still need to observe isolation.