Forecasting daily confirmed COVID-19 cases in Algeria using ARIMA models.

Abstract

COVID-19 has become a threat worldwide, affecting every country. This study aimed to identify COVID-19 cases in Algeria using times series models for forecasting the disease. Confirmed COVID-19 daily cases data were obtained from 21 March 2020 to 26 November 2020 from the Algerian Ministry of Health. Forecasting was done using the Autoregressive Integrated Moving Average (ARIMA) models (0,1,1) with Minitab 17 software. Observed cases during the forecast period were accurately predicted and placed within prediction intervals generated by ARIMA. Forecasted values of COVID-19 positive cases, recoveries and deaths showed an accurate trend, which corresponded to actual cases reported during 252, 253 and 254 days. Results were strengthened by variations of less than 5% between forecast and observed cases in 100% of forecasted data. ARIMA models with optimally selected covariates are useful tools for predicting COVID-19 cases in Algeria.