摘要
On March 11,2020,the World Health Organization(WHO)formally declared coronavirus disease 2019(COVID-19)a worldwide pandemic as the virus spreads rapidly with new cases and deaths rising exponentially in many countries.As of March 12,there were 125,048 confirmed cases and 4,613 deaths,and the numbers are still surging affecting 118 countries(1).Now we know that regional efforts to contain individual outbreaks have failed.The next phase of epidemic control is mitigation,and China has implemented multiple effective measurements such as mandatory citywide lockdowns to isolate and block the spread since January 2020.Recent data has shown evidence of controlling the epidemic(2).
