U.S. Influenza Vaccination Coverage by Jurisdiction, Age Group, and Flu Season

Monthly cumulative counts and percentages of persons receiving at least one influenza vaccine dose, sourced from U.S. jurisdictions' Immunization Information Systems (IIS). Data is aggregated by age group and jurisdiction, with population denominators from 2020 U.S. Census estimates. National estimates are not provided as not all jurisdictions report their IIS data to the CDC.

Use Cases

• Analyze vaccination coverage trends over time using the `current_season`, `month`, and `estimate` columns.
• Compare vaccination rates across different age demographics using the `age_group_label` and `estimate` columns.
• Assess jurisdictional differences in immunization efforts using the `jurisdiction`, `numerator`, and `population` columns.
• Calculate cumulative vaccination totals for a flu season using the `month`, `numerator`, and `current_season` columns.

Strengths

• Data is sourced from Immunization Information Systems (IIS), which contain all vaccinations administered within a jurisdiction rather than a sample.
• Includes monthly cumulative estimates from July through each month of the flu season.
• Covers multiple U.S. states, localities, and territories as reporting jurisdictions.

Limitations

• Data quality and completeness may vary across jurisdictions due to differing state laws and policies on data submission.
• Row count and dataset size are unknown, which may limit suitability assessment.
• National estimates are not presented because not all U.S. jurisdictions report their IIS data to the CDC.

Provenance

Source

data.cdc.gov, sourced from U.S. jurisdictions' Immunization Information Systems (IIS).

Collection Method

Aggregated monthly submissions from state, territorial, and local public health agencies to the CDC.

Time Range

Covers multiple flu seasons; data is cumulative from July through each reported month.

Freshness

Last updated 2024-09-03 21:20:45.

Geography

Includes U.S. states, some localities, and territories that report data to the CDC.