NGOC, Kim; TRIFONOVA, Iva; GLADNISHKA, Teodora; PANAYOTOVA, Elitsa; TASEVA, Evgenia; IVANOVA, Vladislava; Kutevа Eleonora; VLADIMIROVA, Iva; CHRISTOVA, Iva. EVALUATION OF POPULATION-LEVEL IMMUNITY TO SARS-COV-2 ACROSS BULGARIA (END OF 2023). PROBLEMS of Infectious and Parasitic Diseases, Sofia, Bulgaria, v. 52, n. 3, p. 13–18, 2025. DOI: 10.58395/03r0mk42. Disponível em: https://pipd.ncipd.org/index.php/pipd/article/view/52-3-2-evaluation-of-population-level-immunity. Acesso em: 16 apr. 2025.