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USAFacts
USAFacts
Health

Detailed Methodology and Sources: COVID-19 Data

This interactive feature aggregates data from the Centers for Disease Control and Prevention (CDC), state- and local-level public health agencies. County-level data is confirmed by referencing state and local agencies directly. Cases, deaths, and per capita adjustments reflect cumulative totals since January 22, 2020.

For most states, USAFacts directly collects the daily county-level cumulative totals of positive cases and deaths from a table, dashboard, or PDF on the state public health website. This data is compiled either through scraping or manual entry.

Because of the frequency with which we are currently updating this data, they may not reflect the exact numbers reported state and local government organizations or the news media. Numbers may also fluctuate as agencies update their own data. At present, USAFacts is working on ensuring this data uses the most up-to-date information possible.

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