Vaccination status and its determinants among children aged 12–23 months in Tigray, northern Ethiopia: A zero-inflated Poisson regression analysis - Hailay Gebretnsae; Brhane Ayele; Fana Gebresilassie; Tsegay Hadgu; Hayelom Kahsay; Asfawosen Aregay; Kiros Demoz; Mulugeta Tilahun; Ataklti Gebretsadik; Znabu Hadush; Liya Mamo; Tsegay Wellay; et al. (PLoS ONE, 2025)