TATUNASHVILI, Salome. Study of the effect of BCG vaccine to protect against Covid-19 infection in healthcare workers. Health Policy, Economics and Sociology, [S. l.], v. 7, n. 1, 2023. Disponível em: https://heconomic.cu.edu.ge/index.php/healthecosoc/article/view/6722. Acesso em: 1 apr. 2025.