This handbook follows a comprehensive approach to health system strengthening at borders in order to support IHR national focal points and other national agencies in developing and implementing evidence-based action plans for IHR capacity development at ground crossings. The approach includes the movement of travellers and baggage, cargo, containers, conveyances, goods and postal parcels across ground crossings, as well as the interaction with adjacent border communities. Other factors can be considered, if needed, throughout the risk assessment.