12. IPUMS TERRA (Terra Populus: Integrated Data on Population and Environment) Bookmark Format Data archive or collection
16. Premise Infant and Maternal Health COVID-19 Health Services Disruption Survey (2020-2021) Bookmark Format Series - completed
17. Pre-Vaccine Era COVID-19 Infection Fatality Ratio Estimates by Age, Time, and Location 2020-2021 Bookmark Format Single study