Public health surveillance is the systematic, ongoing assessment of the health of a community, based on the collection, interpretation, and use of health data. Surveillance provides information necessary for public health decision making and interventions. In the third edition of Principles and Practice of Public Health Surveillance, the editors present an organized approach to planning, developing, and implementing public health surveillance systems in response to the rapidly changing field of public health. Substantially revised and expanded on, this edition continues to examine further the...