Weekly Influenza Vaccination Coverage for U.S. Adults

Weekly cumulative influenza vaccination coverage estimates for adults aged 18 and older in the United States, produced by the CDC. The data is sourced from the National Immunization Survey-Adult COVID Module (NIS-ACM), which began in April 2021. It provides weekly estimates for monitoring vaccination uptake and trends.

Use Cases

• Analyze weekly trends in influenza vaccination coverage for the U.S. adult population.
• Monitor vaccination uptake and progress across different weeks of the flu season.
• Compare cumulative coverage estimates from the NIS-ACM survey against other CDC data sources like FluVaxView.

Strengths

• Data originates from the U.S. Centers for Disease Control and Prevention (CDC), a primary public health authority.
• Provides weekly estimates, enabling high-frequency trend analysis of vaccination coverage.
• Focuses on a specific demographic: adults aged 18 years and older.

Limitations

• The sample size and number of data rows are unknown, limiting assessment of statistical power.
• The dataset's specific columns and granularity (e.g., by state, age group, or race) are not detailed in the input.
• Data collection began in April 2021, so it does not cover flu seasons prior to that date.

Provenance

Source

United States Department of Health and Human Services. Centers for Disease Control and Prevention

Collection Method

National Immunization Survey-Adult COVID Module (NIS-ACM)

Time Range

Weekly data from April 2021 onward

Freshness

Data was last updated on February 23, 2026, indicating recent maintenance.

Geography

United States