Modeling process: select the research topic, analyze the problem, select the dependent variable and find out the parameters that affect the result of the problem, and establish the basic equation. Model solving, analysis and evaluation. A complete paper includes abstract, symbol explanation, model hypothesis, model establishment, model solution, model analysis (result analysis, error analysis, sensitivity, feasibility. . . ), model evaluation (advantages and disadvantages), and improvement direction.

For infectious diseases, there are common differential equation model, difference equation model and probability statistical model. If you only practice with this question, you need to come up with new creative methods or conclusions if you want to win the prize, because many people have studied this question many years ago.

I suggest you read books on mathematical modeling. Some university brothers and sisters can ask them to borrow from the library for you, and related papers can also be downloaded from the library. Although I don't have enough knowledge in high school, I just need to learn by myself. I hope you are getting better and better in styling.