WONDER: U.S. Public Health Records from Multiple Surveillance Systems

Wide-ranging Online Data for Epidemiologic Research (WONDER) aggregates U.S. public health surveillance data from sources like death certificates, birth records, and disease case reports. The platform hosts data from systems including the National Notifiable Disease Surveillance System and the 122 Cities Mortality Reporting System. Data spans several decades, with some records, like county-level mortality data, beginning as early as 1979.

Use Cases

• Modeling long-term mortality trends based on county-level death certificate data since 1979.
• Analyzing cancer incidence and mortality patterns using state and metro-level registry data since 1999.
• Tracking infectious disease outbreaks based on weekly provisional case reports from national surveillance systems.
• Studying birth outcomes and infant health using linked birth and death certificate records since 1995.

Strengths

• Aggregates data from over a dozen distinct U.S. public health surveillance systems.
• Includes long-term time-series data, with some records covering over 40 years (e.g., mortality since 1979).
• Provides data at multiple geographic levels, including county, state, and metropolitan areas.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Last update date is unknown; freshness unverified.

Provenance

Source

U.S. public health agencies (e.g., CDC, NCHS) via the WONDER web server.

Collection Method

Aggregation of official administrative records and surveillance system reports.

Time Range

Varies by source; earliest records from 1970 (population estimates), with most major health datasets starting between 1979 and 1999.

Geography

Primarily United States, with data available at county, state, and metropolitan area levels.