Analysis of the side effects of using the Covid-19 vaccine for the elderly: Covid-19 vaccine. Journal of Unify, [S. l.], v. 1, n. 01, p. 1–6, 2020. DOI: 10.2020/unify.v1i01.40. Disponível em: https://demo.openjournaltheme.com/unify/article/view/40.. Acesso em: 6 apr. 2025.