Outbreak surveillance and response in humanitarian emergencies: WHO guidelines for EWARN implementation

The purpose of this document is to provide a standard framework and best current practice for implementation of an Early Warning and Response Network (EWARN) and its operation in the field, following humanitarian emergencies. These guidelines are intended for all individuals responsible for disease surveillance activities at all levels. These individuals include health facility staff, surveillance officers, epidemiologists, data analysts and statisticians, government health officials, sanitarians, managers of the Expanded Programme on Immunization (EPI), public health officers, laboratory personnel and community health workers.