Introduction - If you have any usage issues, please Google them yourself
The SIR model is the most classic model in the infectious disease model, where S represents a susceptible person, I represents an infected person, and R represents a recovering person. In the SIR model, the infected patient group is the source of infection. He transmits the infectious disease to the susceptible population through a certain probability. He also has a certain chance/can be cured and immunized, or died; once the susceptible population is infected, it is again Become a new source of infection. The population is divided into three categories, susceptible to infection, infected and recovered.