Zrieq, Rafat, Sahbi Boubaker, Souad Kamel, Mohamed Alzain, and Fahad D. Algahtani. 2022. “Analysis and Modeling of COVID-19 Epidemic Dynamics in Saudi Arabia Using SIR-PSO and Machine Learning Approaches”. The Journal of Infection in Developing Countries 16 (01):90-100. https://doi.org/10.3855/jidc.15004.