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Mapping Bacillus Calmette-Guérin vaccination coverage in Africa from 1990 to 2022: a novel spatiotemporal modelling study

Bacillus Calmette-Guérin (BCG) protects children from severe tuberculosis and remains the only licensed vaccine for tuberculosis. Subnational estimates of BCG coverage are essential for identifying underserved populations across Africa. This study aimed to map BCG vaccination coverage in Africa from 1990 to 2022. 

Citation:
Liyew AM, Gilmour B, Clements ACA, Gething P, Rumisha SF, Lubinda J, Alene KA. Mapping Bacillus Calmette-Guérin vaccination coverage in Africa from 1990 to 2022: a novel spatiotemporal modelling study. Lancet Global Health. 2025;13(11):e1849-e56.

Keywords:
Africa; BCG vaccine; administration; dosage; Bayes Theorem; spatio-temporal analysis; tuberculosis; preventon; coverage

Abstract:
Bacillus Calmette-Guérin (BCG) protects children from severe tuberculosis and remains the only licensed vaccine for tuberculosis. Subnational estimates of BCG coverage are essential for identifying underserved populations across Africa. This study aimed to map BCG vaccination coverage in Africa from 1990 to 2022.