Bulletin of the World Health Organization
Volume 100(2);  2022 Feb 1
https://www.ncbi.nlm.nih.gov/pmc/issues/399608/

Childhood immunization during the COVID-19 pandemic: experiences in Haiti, Lesotho, Liberia and Malawi
Emilia Connolly, Emma J Boley, Donald Luke Fejfar, Prince F Varney, Moses B Aron, Isabel R Fulcher, Wesler Lambert, Melino Ndayizigiye, Michael R Law, Jean-Claude Mugunga, Bethany Hedt-Gauthier, on behalf of the Cross-site COVID-19 Syndromic Surveillance Working Group
Bull World Health Organ. 2022 Feb 1; 100(2): 115–126C. Published online 2021 Nov 17. doi: 10.2471/BLT.21.286774
PMCID: PMC8795848