Infection Fatality Rate Of Covid19 – A Logistic Model

In this review one of the most important epidemiological parameter ie Infection fatality ratio ( 1 ) is correlated with age of the population through a sigmoid statistics of Logistic odel. The IFR is a special case of case fatality ratio ( CFR ) . The CFR ( 1 ) is termed as the number of deaths due to symptomatic Covid infection within entire population per unit time . The IFR is a special case of CFR where number of deaths to be cons-idered as total number of deaths due symptomatic as well as asymptomatic infection within the same population per unit time .The data analysis of IFR vs Age of the population shows a significant correlation ( r ) of Sigmoid model ( 3-4 ) .