Abstract
Spatial analysis of COVID-19 incidence during the delta (July 17-November 13, 2021) and omicron (November 27-March 26, 2022) waves, central Virginia health district
APHA 2023 Annual Meeting and Expo
Methods: COVID-19 cases were collected from the Virginia Electronic Disease Surveillance System (VEDSS) database during the Delta and Omicron variant waves from July 17, 2021 - November 13, 2021, and November 27, 2021 - March 26, 2022, respectively. These final data were cleaned utilizing Microsoft Excel 2016 © and spatially analyzed through ArcGIS Pro 2.9.2 ©.
Results: Heat maps were generated to depict disease incidence between census block groups. Due to Omicron's increased transmissibility compared to Delta, Omicron incidence surpassed Delta by approximately ten thousand cases (45%) and affected a larger number of census block groups. Nevertheless, both maps reveal overlapping block groups. High Omicron and Delta were found in rural localities, mostly comprised of white senior citizens and middle-aged adults with low vaccination uptake. High incidence was shown in an inner city block group of Lynchburg City. The demographics skew younger, with a primarily African American composition and a median household income of roughly $20,000 less per year than the rural communities.
Conclusion: Future outreach efforts can focus on these target areas based on these findings. Such efforts should include community-specific vaccination and COVID-19 mitigation messaging targeting an older, white, conservative population in the rural areas and a young, African American population in inner city Lynchburg.
Epidemiology Public health or related research