Timing of occurrence of waterfowl in U.S. counties and Canadian counties, boroughs, census districts, and other populated area designations with modeled exposure status to highly pathogenic avian influenza virus in 2021-2022

This data provides county level occurrence information for all individuals used in modelling potential exposure and spread of highly pathogenic avian influenza (HPAIv) from the 2021-2022 North American outbreak. The data set contains individual identifiers and taxa information, an indicator of exposure, exposure status (Susceptible, Exposed by HPAIv detection in the county, or Exposed by secondary contact with an exposed bird), and date of first occurrence of each individual bird and that bird's exposure status within each visited county. Herein, county refers to any county, parish, borough, census area, or geographic region identified in the associated geospatial data US_CAN_AI.shp (ESRI shapefile format). Occurrence was determined using a spatial join procedure between GPS relocations of individuals and this geospatial dataset.