This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/policies/article-withdrawal). This article has been retracted at the request of the Editor. The Editor of Operations Research Perspectives has retracted the publication based on evidence that the authors have plagiarized parts from another paper. The original publication is entitled �Mathematical Modeling of Epidemic Diseases; A Case Study of the COVID-19 Coronavirus� (Reza Sameni, ArXiV, https://doi.org/10.48550/arXiv.2003.11371). The scientific community takes a very strong view on this matter and apologies are offered to readers of the journal that this was not detected during the submission process. © 2023 The Authors