Objective To establish an appropriate quantitative model to evaluate the relationship between bacillary dysentery and floods in Liuzhou, China. Methods On the basis of time series analysis to control longterm trends, seasonal trends, lagged effect and meteorological factors, the seasonal autoregressive moving average(SARIMA) model was conducted to examine the relationship between bacillary dysentery and monthly flood days. Results This study showed that the morbidity of bacillary dysentery in the flood peri...