evidence: An estimated 33 million children will need to be vaccinated in Africa between 2023 and 2025 to put the continent back on track to achieve the 2030 global immunization goals that include reducing morbidity and mortality from vaccine-preventable diseases, an analysis by World Health Organization (WHO) finds. [...] This year, African Vaccination Week and World Immunization Week, from 24–30 April, is being marked under the theme "The Big Catch-Up". This is a global push by WHO and partners to intensify efforts to reach children who missed vaccinations, as well as to restore and strengthen routine immunization programmes. [...] To urgently scale up coverage and protect children, WHO and partners are supporting 10 priority African countries—which are among the top 20 countries globally with the highest numbers of zero-dose children—to carry out catch-up routine vaccination campaigns.