KHAN, Sadaf et al. The Big Catch-up: Addressing Zero-Dose Children as a Surrogate of Vaccination Disruptions During Public Health Emergencies: A review of literature. ESI Preprints (European Scientific Journal, ESJ), [S. l.], v. 20, n. 36, p. 19, 2024. DOI: 10.19044/esj.2024.v20n36p19. Disponível em: https://esipreprints.org/index.php/esipreprints/article/view/1633. Acesso em: 25 may. 2026.