Understanding the COVID-19 vaccine uptake, acceptance, and hesitancy in Ethiopia and Tanzania: a scoping review - Gudina, Esayas Kebede; Muro, Florida Joseph; Kyala, Norman Jonas; Melaku, Tsegaye; Sørensen, Jane Brandt; Meyrowitsch, Dan Wolf; Mekonnen, Zeleke; Dræbel, Tania Aase (Frontiers in Public Health, 2024)