 The World Health Organization and United Nations Children's Fund, who slash UNICEF, estimates that there were approximately 25 million under vaccinated children in 2021, of whom 18 million were zero-dose children who had not received any doses of a Dithyria tetanus pertussis, DTP, containing vaccine. The number of zero-dose children increased by 6 million from 2019, the pre-pandemic year. 20 countries with the highest number of zero-dose children and home to over 75% of these children were prioritized for this review. These countries also faced significant urbanization, which posed additional challenges. This review paper summarizes the backsliding of routine immunization coverage following the COVID-19 pandemic and identifies pro-equity strategies in urban and peri-urban settings. It also highlights the need to focus on context-specific routine immunization catch-up and recovery strategies to suit the peculiarities of urban areas. Additionally, it emphasizes the importance of utilizing tools and platforms created to advance the equity agenda. This article was authored by Ibrahim Dadari, Rachel V. Belt, Ananya Yengar, and others. We are article.tv, links in the description below.