A Two-Objective Model for the Multilevel Supply Chain of Blood Products with the Approach of Reducing the Rate of Contagion under the (COVID-19) Epidemic Outbreak Conditions

Table 1

Characteristics of the proposed mathematical formulation.

Objective functions	Characteristics	Solution method
Minimizing of costs	The coronavirus epidemic imposes higher investment and operating costs on the health and treatment network, the BSC network, and, subsequently, the society’s economy, in different ways	To solve the proposed mathematical formulation, the exact solution methods, LP-metric, AUGMECON2, and improved weighted Chebyshev, are used. The model is implemented and compared by them in several sample test problems. Finally, the superior solution method is selected by the TOPSIS technique
Minimizing the spread of the coronavirus	The objective is to minimize the spread of the COVID-19 virus in the presence of blood donors in mobile, regional, and local blood centers in the proposed supply chain