Krumova, S.; Andonova, I.; Stoitsova, S.; Stefanova, R.; Vladimirova, N. .; Parmakova, K.; Kurchatova, A. PREVALENCE OF MEASLES IGG ANTIBODIES AMONG HEALTHCARE WORKERS IN BULGARIA. Probl Infect Parasit Dis 2021, 49 (2), 14-19. https://doi.org/10.58395/pipd.v49i2.64.