Project Tycho (TM) Level 1 Data


US weekly Nationally Notifiable Disease Surveillance Data from 1888 to 2013. These data include tables of disease counts reported by US states and cities to the Federal Health Authorities every week since 1888. These tables have been published in various journals over time and are available in various online repositories but are now also available in digital, computer-readable format.

Download the Data: API CSV

Agency and Program Information

Agency: Department of Health & Human Services
Data Series Location: http:/­/­
Keywords: NNDSS, Notifiable diseases, disease data, reported diseases, surveillance
Subject: Biomedical Research
Subject: Epidemiology
Subject: Population Statistics
Date Released: Nov 26, 2013
Date Updated: Nov 21, 2013

Data Collection and Frequency

Collection Frequency: Semi-Annually
Coverage Period Start: Jan 1, 1888
Coverage Period End: Aug 16, 2013
Coverage Period Fiscal Year Start: FY 1888
Coverage Period Fiscal Year End: FY 2013
Unit of Analysis: cities, states/territories, epidemiological regions
Geographic Scope: USA
Geographic Granularity: City