The time of prevention and control in European and American countries is much later than ours, and because of some international barriers, in fact, all countries do not fully trust each other's news. For example, China reported the COVID-19 epidemic in real time internationally, but at that time, countries such as Europe and America didn't believe the data given by China at all, and didn't realize the seriousness of the matter, so Britain didn't pay much attention to the confirmed cases when they first appeared.
As a leader among leaders, the British government paid insufficient attention to the epidemic, not to mention the people he led and these schools. After the case was confirmed, the government did not ask the school to suspend classes, so Oxford University naturally would not choose to suspend classes. Besides, most British people didn't think COVID-19 was harmful at that time.
Apart from the attitude of the government, Oxford University, as a world-famous university, has students from all over the world and all over the country. If classes are suspended suddenly, it is necessary to implement the course arrangement and student placement one by one. If classes are suspended, a large number of students will choose to return to China, and the arrangement of the new semester will be disrupted, resulting in a series of events, which is not something that can be completed in a short time.
Therefore, when the first five cases of COVID-19 were diagnosed, Oxford University did not choose to suspend classes immediately, but waited for the government and the development of the epidemic before making a decision.