- Look at voting results in different counties: https://electionlab.mit.edu/data
- Look at impact of vaccination: https://data.cdc.gov/Vaccinations/COVID-19-Vaccinations-in-the-United-States-County/8xkx-amqh
- Look at impact of government response: https://www.bsg.ox.ac.uk/research/research-projects/covid-19-government-response-tracker
- Predict what the virus spread would have been without measures, compare with actuals, deduce lives saved
- Look at the impact of covid and lockdown on mental health