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. 2023 Mar 10;10(4):ofad136. doi: 10.1093/ofid/ofad136

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© The Author(s) 2023. Published by Oxford University Press on behalf of Infectious Diseases Society of America.

This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs licence (https://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial reproduction and distribution of the work, in any medium, provided the original work is not altered or transformed in any way, and that the work is properly cited. For commercial re-use, please contact journals.permissions@oup.com

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Figure 1. — Study design of the Bacterial Infections and Antibiotic-Resistant Diseases Among Young Children in Low-Income Countries (BIRDY) cohort and national immunization programs in Cambodia, Madagascar, and Senegal. A, Schedule of home visits of the BIRDY cohort by country and site. B, Vaccines recommended in the national immunization programs of Cambodia, Madagascar, and Senegal and included in the analysis. (Other vaccines are recommended in these countries, but not covered in this study.) A dose of hepatitis B vaccine is recommended at birth, within the first 24 hours, in Cambodia and Senegal but not in Madagascar. One dose of oral polio vaccine is recommended at birth, within the first 14 days, in Senegal and Madagascar only. A second dose of measles vaccine is recommended at 15 months in Senegal and 18 months in Cambodia, whereas in Madagascar, only 1 dose is recommended. Abbreviations: HepB, hepatitis B vaccine; OPV zero, oral polio vaccine at birth; OPV 1, oral polio vaccine recommended at 6 weeks; OPV 2, oral polio vaccine recommended at 10 weeks; OPV 3, oral polio vaccine recommended at 14 weeks; Penta, pentavalent vaccine (diphtheria, tetanus, pertussis, Haemophilus influenzae type b, hepatitis B).