DR. MARIA GOMEZ, MD, PHD. COVID-19 Variants and Vaccine Effectiveness: A Global Overview. HYDERABAD JOURNAL OF SCIENCES, [S. l.], v. 1, n. 05, p. 28–39, 2025. Disponível em: https://www.hjsjournal.com/index.php/hjs/article/view/22. Acesso em: 7 nov. 2026.