We have already had a lot of COVID-19 articles. Every country's goal now is how to reduce the number of death. Since the exponential growth rate of an epidemic, it should be the first priority that how to avoid the corruption of the health system. We need the precise data of how many patients are there. Otherwise we can not have a strategy, how many beds we need, how long we need to lock down, how many test we need to deploy, every strategy needs to be answered the questions: how many X we need? In this article I based on the data from John Hopkins Data Repository and the analysis of Aatish's Exponential/Logistic Curve-Fitting Site . When I checked this data, I found an abnormality of Japanese data. Figure 1 shows the total confirm cases and new confirmed cases in the past week. Japanese data is way less compare to other countries. Figure 1 Data source: minutephysics: How To Tell If We're Beating COVID-19 You might think, a small new case ratio sounds good. ...
Mathematics, programming, and a little bit of my life.