Tracking R-t of COVID-19 Vaccine Effectiveness Using Kalman Filter and SIRD Model

In this paper, a SIRD model is adapted to study the vaccine's impact on the spread of coronavirus (COVID19) spread in Lebanon. To describe the epidemic development across the country, a Kalman filter is integrated with the SIRD model in order to estimate the time-varying reproduction number R-t - is the most important indicator that predicts the severity of an epidemic outbreak. R-t denotes the number of healthy persons to whom an infected person can spread the disease. The results show a reduction in the spread of the pandemic after employing the vaccine. All the data and relevant codebase are available at https://www.moph.gov.lb