Weekly Child COVID-19 Vaccination Coverage Comparisons by Jurisdiction

Weekly cumulative percentages track children aged 6 months to 17 years who are up to date with COVID-19 vaccines, comparing the 2025-26 season to past seasons across U.S. jurisdictions. Estimates are derived from the National Immunization Survey-Flu, a national random-digit dial telephone survey of households conducted from October to June. The data was last updated by data.cdc.gov in March 2026.

Use Cases

• Analyze trends in vaccination coverage (curr_est) across different jurisdictions (geographic_name) and demographic groups (Demographic_name).
• Compare seasonal vaccination rates (curr_season, Past_season) using the difference_estimate and significance columns.
• Monitor weekly updates in vaccination estimates (curr_week_ending, Previous_week_ending) for specific vaccines (vaccine).
• Assess statistical confidence in estimates (curr_ci_95, Past_ci_95) and differences (diff_ci_95) for reporting.
• Filter and analyze data by demographic levels (Demographic_level) and geographic levels (geographic_level).

Strengths

• Data provides weekly granularity for tracking trends.
• Includes comparisons between multiple seasons (2025-26 and previous).
• Contains confidence intervals (curr_ci_95, diff_ci_95) for statistical reliability.
• Covers multiple jurisdictions (geographic_name) and demographic groups.

Limitations

• Sample size and total row count are unknown.
• Estimates are based on parental report, not verified medical records.
• Data posted on this platform lags a few days behind CDC's primary data channel.

Provenance

Source

data.cdc.gov, based on the National Immunization Survey-Flu (NIS-Flu).

Collection Method

National random-digit dial cellular telephone surveys of households with children.

Time Range

Weekly data through December 2023 from NIS-CCM; ongoing seasonal data from NIS-Flu (October-June).

Freshness

Updated weekly; last platform update was March 2026.

Geography

United States, by jurisdiction (geographic_name).