Seasonality, disease and behavior: Using multiple methods to explore socio-environmental health risks in the Mekong Delta

► Integration of multiple disciplines to analyze seasonal dynamics of disease risk in a flood plain environment. ► Applied to a peri-urban context of poor environmental health conditions and low-income population dependent on river water. ► High seasonality of environmental conditions did not produce significant overall changes in diarrheal disease risk. ► Outcomes complicated by seasonal behaviours, household variation in risk factors and multiple disease pathways. ► Underlines how social science inputs can enhance explanatory depth in environmental health research design.