![]() In most cases, health care facilities are located within the HDSS surveillance areas. In addition, most HDSS sites monitor causes of death as a major indicator of population health (1), and capture several types of socio-economic data, including household wealth and education status, as additional information for evaluating population health profiles (3). HDSSs capture information on residence, update vital events and cover the whole or part of a district where data on all individuals, their relationships, ages as well as other attributes, are recorded longitudinally along with events affecting population dynamics including births, deaths and migrations (in and out) ( 1, 2). ![]() Health and Demographic Surveillance Systems (HDSSs) provide a useful framework for tracking demographic and health dynamics over time in a defined geographical area.
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