Project Tycho® is a project at the University of Pittsburgh to advance the availability and use of public health data for science and policy making. Currently, the Project Tycho® database includes data from all weekly notifiable disease reports for the United States dating back to 1888. These data are freely available to anybody interested. Additional U.S. and international data will be released twice yearly. Please register here to start using these data for your project!

Level 1 data

These data have been custom tailored for specific analyses. These are the most complete and standardized data but for a limited number of diseases, locations, and years.

Current version: 1.0.0

Indicators: cases and incidence rates
Diseases: 8
Locations: 50 states and 122 cities (diphtheria only)
Years: 1916 to 2009

Go to level 1 data


Level 2 data

These are standardized data for immediate use and include a large number of diseases, locations, and years. These data are not complete because standardization is ongoing.

Current version: 1.1.0

Indicators: cases and deaths
Diseases: 50
Locations: 50 states, 6 territories, and 1284 cities
Years: 1888 to 2014

Go to level 2 data


Level 3 data

These data have not been standardized at all and cannot be used for analysis. These data are provided upon request.

Current version: 1.1.0

Indicators: cases, deaths, and summary statistics
Diseases: 58
Locations: 10 regions, 50 states, 6 territories, 3165 counties, and 3026 cities, towns, and parishes
Years: 1887 to 2014

Level 3 data request form


The Project Tycho® database is funded by the Bill & Melinda Gates Foundation and the National Institutes of Health

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