Evaluation of the Effectiveness of Influenza Vaccination among Primary School Students in Fangshan District, Beijing

Influenza (hereinafter referred to as “influenza”) is an acute respiratory infectious disease caused by influenza virus, which is seriously harmful to human health. Its antigenicity is variable and spreads rapidly. It can cause seasonal epidemics every year. People are generally susceptible to influenza virus. Pregnant women, infants, the elderly, patients with chronic diseases and other high-risk groups are more serious after infected with influenza virus. Influenza outbreaks are easy to occur in schools, kindergartens, nursing homes and other places where people gather. Annual influenza vaccination is an effective means to prevent influenza and reduce the burden of influenza related severe illness and death. It can reduce the health hazards caused by influenza related diseases and the run on medical resources. Therefore, the data of free influenza vaccination among primary school students in Fangshan District of Beijing in 2023 and the survey data of influenza clustering in the influenza epidemic season from 2023 to 2024 were selected to evaluate the vaccination rate and the protection effect of influenza vaccine.