A study of the relative efficacy of the new crown vaccine in the role of infection prevention and disease reduction based on empirical data analysis

Abstract

This paper investigated the relative efficacy of the new crown vaccine in preventing infection and reducing illness by analyzing empirical data. Countries with more complete vaccination were selected and the relationship between new crown vaccination and new infection cases and severe cases (ICU patients) was analyzed. The effect of vaccination on new crown infections and symptom relief was assessed by statistical methods such as Z-test, Pearson's coefficient, chi-square test, and regression analysis. The results showed that vaccination had a more limited effect on the prevention and control of new crown infection, but demonstrated a more significant efficacy in alleviating symptoms and reducing the incidence of severe illness. Further analysis revealed that vaccine efficacy was influenced by demographic characteristics such as age and gender. Although the study demonstrated a greater impact of vaccines in symptom reduction, the findings are still limited due to missing data and potential external factors. This study provides an empirical basis for the optimization of vaccination strategies and provides a reference for future research on new crown prevention and control.