Prevention and Control Effects of Different Prevention and Control Mechanisms on the Epidemic of COVID-19

: The author wrote this article when the global COVID-19 epidemic has been nearly three years. Objective: To compare and explain the overall effect of different prevention and control mechanisms on the prevention and control of the novel coronavirus outbreak in the early stage and their impact on the economy and society; To disseminate advanced and scientific mechanisms for infectious disease prevention and control to the people and reduce the harm of infectious diseases to mankind. Analysis methods: According to the official data and the available data, a variety of statistical methods were used to analyze the epidemic law of COVID-19 under different prevention and control mechanisms, and to elaborate the prevention and control effects of different prevention and control mechanisms. Results: Through comparison and analysis, China with A type of prevention and control mechanism with a total of 258398 confirmed cases, an incidence rate of 0.18%, and a total of 5226 deaths. The COVID-19 epidemic had little impact on the economy and society, social stability, and rapid economic recovery. Which adopt B kind of prevention and control mechanism to control the new outbreak in the United States, the new crown lu, pneumonia epidemic outbreak, 99229138 cases of the cumulative cases, incidence was 30.25%, the total death toll has more than one million people, the absolute number of morbidity and mortality is higher than China's, America's new crown pneumonia outbreak of a pandemic caused serious influence on the economic and social, The loss of labor force is serious, the supply chain of industrial chain should be hindered, unemployment rate is rising, inflation, social conflicts are intensified, and economic recovery is difficult. Facts show that the prevention and control mechanism A is superior to the prevention and control mechanism B.