[Thoughts on the outbreak phases of the COVID-19 changed from emergency response to the combination of emergent response and regular prevention and control activities].

Given the scope and speed of the spread, the COVID-19 pandemic is not only complex but dangerous. Complicated objective factors such as the long-term existence of source of infection, difficulty in completely blocking the transmission route and a large susceptible population suggested that the COVID-19 pandemic might stay with us for long term. Therefore, we should be ready for a tough and long-term battle against the COVID-19 epidemic. The strategy should adhere to the principle of combining emergency response with regular prevention and control measures, and all efforts should be well harnessed in a coordinated way to keep the epidemic under control.