Open Access | ReviewReview of social services on the vulnerable population in the Covid-19 era December 2, 2021 Medicine & Health, Social Sciences Authors: Cruz García Lirios, Jorge Hernández Valdés and Margarita Juárez Nájera Journal: Social Work and Social Welfare DOI: 10.25082/SWSW.2022.01.001 Pub. Date: December 2, 2021