Author Interviews, COVID -19 Coronavirus / 08.05.2020
COVID-19: Estimating The Infection Fatality Rate Among Symptomatic US Patients
MedicalResearch.com Interview with:
Anirban Basu, Ph.D.
Stergachis Family Endowed Director and Professor
The Comparative Health Outcomes, Policy, and Economics (CHOICE) Institute
University of Washington, Seattle
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: The infection fatality ratio (IFR) of Covid19 infections is a key parameter to model the future burden of this pandemic. Case fatality rates at any point in time provide a biased estimate of IFR because of the undercounting in both the reported number of covid deaths (numerator) and the reported number of Covid19 cases (denominator). Instead, this study looked at the temporality or time trend of the CFRs within specific counties in the US (where data were deemed to be mature) to understand the underlying IFRs that these trends allude to. It estimates county-specific IFR to range from 0.5% to 3.6%, with a population average for the US at 1.3% (95% CCI: 0.6% - 2.1%). (more…)