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2. Global Routine Vaccination Coverage, 2018
3. Immunization coverage. World Health Organization. July 14, 2022. Accessed January 17, 2023. https://www.who.int/news-room/fact-sheets/detail/immunization-coverage
4. Immunization Data Portal. World Health Organization. Accessed January 17, 2023. https://immunizationdata.who.int/
5. Immunization coverage: are we losing ground? UNICEF. July 2020. Accessed January 17, 2023. https://data.unicef.org/resources/immunization-coverage-are-we-losing-ground/