KHALID, Zahra et al. Attitudes of People Towards Covid-19 Booster Shots. Journal of Society of Prevention, Advocacy and Research KEMU, [S. l.], v. 2, n. 1, 2023. Disponível em: https://journalofspark.com/journal/index.php/JSpark/article/view/135. Acesso em: 27 oct. 2025.