The effect of COVID vaccination timing on the seroprevalence of IgG antibodies: evidence from the Guayas region of Ecuador - Malacatus-Arboleda, Aurora; Barbotó-Ramírez, Erick; Sánchez, Gonzalo E.; Moscoso, Bernard; Rhodes, Lauren A.; Coloma, Josefina; Guevara, Ángel; Espinoza-Fuentes, Fernando; Fernández-Cadena, Juan Carlos; Morey-León, Gabriel; Andrade-Molina, Derly (Frontiers in Public Health, 2025)