Epidemiological Surveillance:
The ongoing and systematic collection, analysis, and interpretation of data about a disease or health condition. As part of a surveillance system to monitor the HIV epidemic in the U.S., the Centers for Disease Control and Prevention (CDC) in collaboration with state and local health departments, other federal agencies, blood collection agencies, and medical research institutions, conducts standardized HIV seroprevalence surveys in designated subgroups of the U.S. population. Collecting blood samples for the purpose of surveillance is called serosurveillance.
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