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Vaccination campaigns have saved thousands of lives, reaching the farthestplaces in the world. These campaigns have required substantial investments andaccurate coordination between several actors within the vaccine supply chain.Despite these successful strategies, the outbreak of COVID-19 has altered theobjectives and rules of undertaking vaccine campaigns. Then, it is essential toconsider two new facts in planning vaccination campaigns. First, some groups ofinfected people by the virus are more vulnerable to severe illness. Second, thevirus is exceptionally contagious; sometimes, no symptoms are apparent.Accordingly, we propose a bi-objective optimization model that allowshealthcare decision-makers to design effective vaccination campaigns byconsidering these COVID-19 characteristics and controlling the associatedcosts. Careful utilization of temporary and traditional vaccination centers iscrucial to creating a more robust strategy. Located in suitable places,temporary centers help increase the probability of reaching groups difficult tobe vaccinated while simultaneously avoiding crowd congestion and reducing therisk of spreading infections in dispensing vaccination centers. Experimentswere conducted using data from an area in Santiago, Chile. The results show themodel allows us to manage the resources by providing a variety of vaccinationplans according to the prioritization level of each objective.

A bi-objective optimization model to plan vaccination campaigns