Weekly US Adult Influenza Vaccinations in Pharmacies and Medical Offices

CDC estimates of weekly cumulative influenza vaccinations administered to US adults aged 18 and older in retail pharmacies and physician medical offices. The data is sourced from IQVIA, with sampled pharmacies and medical offices representing approximately 92% and 82% of national influenza vaccine administration volumes, respectively. Vaccinations from other settings like workplaces are not included.

Use Cases

• Analyze weekly trends in pharmacy versus medical office vaccination administration rates to assess distribution channel effectiveness.
• Model the cumulative estimated number of vaccinations to forecast seasonal influenza vaccine uptake and public health impact.
• Compare vaccination volumes across different weeks and seasons to identify patterns in public health campaign timing.

Strengths

• Data coverage represents approximately 92% of influenza vaccines administered in retail pharmacies nationally.
• Data coverage represents approximately 82% of influenza vaccines administered in physician medical offices nationally.
• National estimates include vaccinations administered in all 50 states and the District of Columbia.

Limitations

• Vaccinations administered in other settings such as workplaces and community settings are not included, limiting the view of total vaccinations.
• Medical office national estimates exclude doses where geographic information (state) was missing, potentially causing undercounting.
• The data is described as archived, which may indicate it is not the most current season's estimates.

Provenance

Source

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

Collection Method

Projected estimates based on data obtained from IQVIA, including pharmacy claims/cash payments and medical office claims.

Time Range

Weekly data, with prior seasons' week ending dates aligned to the current season's dates.

Freshness

Data is archived; last metadata update was 2026-02-23.

Geography

United States (50 states and District of Columbia).