L. Chinazzo, A. J. Teixeira de Oliveira, L. Bragança, J. Firme, F. Goveia, and F. Sodré, “From Activism to Radicalization: The Evolution of Vaccine Disinformation in the Brazilian Social Media Ecosystem (2021–2025) ”, Rev Esp Comun Salud, vol. 17, no. 2, pp. 38–58, Jul. 2026, doi: 10.20318/recs.2026.9951.