COVID-19: How to estimate the percentages of asymptomatic and immune individuals

Abstract

Epidemiology focuses on the identification of patterns in disease occurrence in order to provide information that may be useful to help prevent it. The research of how a disease may be transmitted is influential for that identification. In the case of COVID-19 this research should focus on the relations between the disease and the populations of susceptible individuals that might be infected. In this context, we propose an approach based on a stratified sampling scheme to estimate the percentages of asymptomatic and immune persons per region in Portugal.