CDC's national genomic surveillance system collects SARS-CoV-2 specimens for sequencing. The dataset likely contains weekly variant share estimates for the United States and its regions, using columns such as week_ending, usa_or_hhsregion, variant, and share. Data is published by data.cdc.gov and was last updated on 2026-03-13.
Use Cases
- Forecast variant prevalence trends using week_ending, variant, and share columns.
- Compare regional variant proportions (usa_or_hhsregion) against national estimates.
- Analyze uncertainty in share estimates using share_lo and share_hi columns.
- Track the emergence and decline of specific variants over time_interval.
Strengths
- Data is sourced from CDC's established national genomic surveillance system.
- Estimates are provided at national and regional (HHS) levels.
- Includes uncertainty bounds (share_lo, share_hi) for proportion estimates.
Limitations
- Row count and total dataset size are unknown.
- Last updated 2026-03-13 15:00:54; freshness should be verified.
- License and detailed collection methodology metadata are unknown.
Provenance
- Source
- data.cdc.gov
- Collection Method
- Sequences from the National SARS-CoV-2 Strain Surveillance (NS3) program and contracted laboratories, analyzed and classified by CDC.
- Freshness
- Last updated 2026-03-13 15:00:54.
- Geography
- United States, nationally and by HHS region.