Weekly U.S. County COVID-19 Community Transmission Levels as Originally Posted

An archived CDC dataset provides weekly historical COVID-19 community transmission levels for U.S. counties and jurisdictions. It contains case rates and test positivity percentages used to classify transmission as low, moderate, substantial, or high. The data was originally posted weekly from October 20, 2022, and is no longer updated after the public health emergency ended in May 2023.

Use Cases

• Analyze temporal trends in community_transmission_level by county_name and state_name over the report_date period.
• Correlate cases_per_100K_7_day_count_change with percent_test_results_reported_positive_last_7_days to study transmission dynamics.
• Map transmission risk using fips_code for geospatial analysis of historical outbreaks.
• Validate classification models for community_transmission_level using the two core metrics (cases and positivity).

Strengths

• Data is sourced from the authoritative data.cdc.gov organization.
• Includes key metrics for transmission classification: cases_per_100K_7_day_count_change and percent_test_results_reported_positive_last_7_days.
• Provides a stable historical record as originally posted, useful for reproducibility.

Limitations

• Data is archived and was last updated on 2025-02-23 23:01:00; it is not current.
• Percent positivity data may be incomplete for the most recent time period in the archive.
• Row count and total size are unknown, which may limit suitability assessment.

Provenance

Source

data.cdc.gov

Collection Method

Weekly aggregation of case and testing data for U.S. counties, as originally posted on the COVID Data Tracker.

Time Range

Weekly data from October 20, 2022, archived after May 2023.

Freshness

Archived; not updated after May 11, 2023.

Geography

United States counties and jurisdictions.