disease surveillance

Syllable breakdown

Dictionary meaning

the ongoing systematic collection, analysis, interpretation, and dissemination of health data for the purpose of planning, implementing, and evaluating public health practice and policy, particularly for the early detection of disease outbreaks and the monitoring of disease trends; disease surveillance systems are the foundation of public health — without reliable data on who is getting sick, where, and from what cause, public health responses cannot be targeted or evaluated; sentinel surveillance uses a network of selected sites or practitioners to monitor disease trends; passive surveillance relies on mandatory reporting of notifiable diseases by healthcare providers; active surveillance involves systematic case-finding by public health staff; syndromic surveillance monitors non-specific clinical syndromes (fever and respiratory illness) to detect outbreak signals before specific diagnoses are confirmed; the International Health Regulations (2005) require WHO member states to report public health events of potential international concern within 24 hours of assessment, making disease surveillance a matter of international obligation

Examples

• Disease surveillance in low-income countries is often limited by inadequate laboratory capacity, poor data infrastructure, and insufficient public health staff.
• Genomic surveillance of SARS-CoV-2 variants through the GISAID platform enabled rapid global tracking of variant emergence and spread during COVID-19.

Synonyms: epidemiological surveillance, public health surveillance, outbreak monitoring