According to the data collected from malayan filariasis observation area in Leshan City, Sichuan, during the year of 1985, 1987 ,1988 and 1996, infectivity index of total population( IIT) has been calculated and analysed.

• 根据1985、1987、1988和1996年4次在马来丝虫病观察区收集的数据，计算分析了人群传染性指数（IT），从1985年的0.；1621%25逐年减至0