PRATIBHA GUPTA. Methods and Difficulties in the Creation of the 2019 Coronavirus Disease Vaccine. Epidemiology, [S. l.], v. 10, n. 1, p. 1–10, 2025. Disponível em: https://openventio.us/index.php/EOJ/article/view/1680. Acesso em: 21 sep. 2026.