Individual and social determinants of SARS-CoV-2 testing and positivity in Ontario, Canada: a population-wide study

Abstract

Where testing is limited, our results suggest that risk factors may be better estimated using population comparators rather than test-negative comparators. Optimizing COVID-19 responses necessitates investment in and sufficient coverage of structural interventions tailored to heterogeneity in social determinants of risk, including household crowding, occupation and structural racism.