GARG, V.; JINDAL, D.; GARG, N.; SINGH, R. HERD IMMUNITY AND COVID-19 VACCINES: AN OVERVIEW. Tropical Journal of Pharmaceutical and Life Sciences, [S. l.], v. 8, n. 1, p. 10–20, 2021. DOI: 10.61280/tjpls.v8i1.46. Disponível em: http://informativejournals.com/journal/index.php/tjpls/article/view/46. Acesso em: 19 sep. 2025.