Weekly Respiratory Virus Vaccination Estimates for Children and Adults

Weekly estimates for influenza, COVID-19, and RSV vaccination coverage among children aged 6 months to 17 years and adults aged 18 years and older in the United States. Data are collected via the National Immunization Survey-Adult COVID Module (NIS-ACM), NIS-Child COVID Module (NIS-CCM), and NIS-Flu through telephone interviews. The dataset covers the 2024-2025 respiratory illness season and was last updated in April 2026.

Use Cases

• Tracking weekly vaccination coverage trends for influenza, COVID-19, and RSV using the `week_ending`, `vaccine`, and `nd_weekly_estimate` columns.
• Analyzing vaccination disparities by demographic factors such as age and race using the `demographic_name` and `demographic_level` fields.
• Comparing state-level and local jurisdiction vaccination rates using the `geographic_name`, `geographic_level`, and `n_weighted` columns.
• Assessing statistical reliability of estimates by examining `ci_half_width_95pct` and `suppression_flag` for small sample sizes.

Strengths

• Provides national, state, and local-level estimates for five specific jurisdictions and territories.
• Includes confidence interval metrics (`ci_half_width_90pct`, `ci_half_width_95pct`) for assessing estimate reliability.
• Data are weighted to represent the non-institutionalized U.S. population and mitigate bias.

Limitations

• All vaccination data is self-reported or parent-reported, which can introduce recall or social desirability bias.
• Estimates should be interpreted with caution when sample size is small, as indicated by the source documentation.
• The dataset excludes households without phone service or with only landline telephones.

Provenance

Source

Centers for Disease Control and Prevention (CDC) via data.cdc.gov.

Collection Method

Data collected via random-digit-dialed telephone interviews for the National Immunization Survey modules.

Time Range

Covers the 2024-2025 respiratory illness season.

Freshness

Weekly updates during the respiratory illness season; last updated April 2026.

Geography

United States, including all states, D.C., five local jurisdictions, and U.S. territories.