Changes in version 0.1.4 (2026-02-20) - change imported function for R CMD check from sf due to reverse dependency. Changes in version 0.1.3 (2026-01-22) - Change resolution of CountyKey71Map to address CRAN old release Mac specific issue. Changes in version 0.1.2 (2026-01-17) - Bug fixes - CRAN Submission changes. - Removed internal function .tree() from exports Changes in version 0.1.1 - Initial CRAN candidate version with the following functionality - Download data from Robert Koch Institute SurvStat service - Paging and controllable caching of downloads - Weekly timeseries or snapshots of data from a single disease season - Stratification and filtering by disease (121 options), age group (8 options), geography (3+1 options) - Stratification by disease subtype given parent disease - Time varying population denominator inference based on geography and age group stratification. - Linked map data included.