Pennsylvania COVID-19 Vaccinations by County and Gender, 2021-2025

Aggregate data from the Pennsylvania Statewide Immunization Information System (PA-SIIS) on COVID-19 vaccinations by county of residence and gender. The dataset includes counts for partially covered, fully covered, and boosted individuals, with suppression applied for quantities less than 5. Weekly updates have concluded, and the data was last updated on July 22, 2025.

Use Cases

• Analyze gender-based vaccination disparities using Partially Covered Male, Partially Covered Female, Fully Covered Male, and Fully Covered Female columns.
• Map county-level vaccination coverage by combining County Name with various dose count columns.
• Track booster dose uptake over time using Additional Dose 1 and Bivalent Booster1 columns across gender categories.
• Assess data completeness and reporting gaps by examining counts in the Unknown gender columns for each dose type.

Strengths

• Data is sourced from the authoritative state immunization registry (PA-SIIS).
• Includes detailed breakdowns for primary series, additional doses, and bivalent boosters across 16 distinct columns.
• Applies privacy suppression for counts less than 5 to protect individual identities.

Limitations

• Row count and total dataset size are unknown, limiting suitability assessment for large-scale modeling.
• Weekly updates have finished, so the dataset is static and may not reflect the most recent vaccinations.
• Description metadata is limited; actual data quality requires manual inspection after download.

Provenance

Source

Pennsylvania Statewide Immunization Information System (PA-SIIS), via data.pa.gov.

Collection Method

Aggregated from information reported to the state immunization registry.

Time Range

Includes data on boosters administered since August 13, 2021, and second boosters since March 29, 2022.

Freshness

Last updated 2025-07-22 15:30:44; freshness should be verified as updates have concluded.

Geography

County-level data for the state of Pennsylvania.