EVALUATION OF THE EFFECTIVENESS OF ROTAVIRUS VACCINE FOLLOWING THE IMPLEMENTATION OF THE NATIONAL ROTAVIRUS VACCINATION PROGRAM IN BULGARIA. TRAKIA JOURNAL OF SCIENCES, [S. l.], v. 23, n. Supplement 1, p. 6, 2025. DOI: 10.15547/tjs.2025.s.01.002. Disponível em: https://tjs.trakia-uni.bg/index.php/tjs/article/view/141.. Acesso em: 22 oct. 2025.