NIS-Flu: Weekly Child Influenza Vaccination Coverage in the U.S.

Weekly cumulative influenza vaccination coverage estimates are provided for children aged 6 months through 17 years in the United States. The data originates from the National Immunization Survey-Flu (NIS-Flu), a national random-digit-dialed cellular telephone survey of households conducted annually during the flu season from October to June. Estimates are based on parental report and include point estimates, confidence intervals, and demographic breakdowns.

Use Cases

• Tracking weekly vaccination progress across flu seasons using Week_Ending and Influenza_Season.
• Analyzing coverage disparities by demographic groups using Demographic_Name and Demographic_Level.
• Comparing national and sub-national estimates using Geography_Name and Geography_Level.
• Assessing estimate precision and statistical reliability using Point_Estimate, 95 CI (%), and CI_HalfWidth.
• Investigating survey sample characteristics using n_weighted and n_unweighted columns.

Strengths

• Data is sourced from a nationally representative survey (NIS-Flu) conducted by the U.S. CDC.
• Provides weekly granularity (Week_Ending) for tracking vaccination progress within seasons.
• Includes statistical measures like point estimates and confidence intervals for reliability assessment.
• Dataset is hosted on multiple platforms (Socrata, Dataverse), indicating established use and importance.

Limitations

• Key metadata like row count, dataset size, and specific license are not provided by any source.
• Sources disagree on the last updated date, with one showing 2024-05-24 and another 2026-02-23.
• Coverage estimates are based on parental report, which may be subject to recall or social desirability bias.

Provenance

Source

United States Department of Health and Human Services, Centers for Disease Control and Prevention (CDC).

Collection Method

National Immunization Survey-Flu (NIS-Flu), a national random-digit-dialed cellular telephone survey of households.

Time Range

Annual flu seasons (October-June), with data archived for prior seasons.

Freshness

2026-02-23 16:22:01

Geography

United States, with national and sub-national (Geography_Name) breakdowns.