The study on the socioeconomic and geographical inequalities in polio immunization coverage among two-year-olds in Sierra Leone between 2008 and 2019 reveals critical insights into the dynamics of health equity in the country. The initial increase in coverage from 48.7% in 2008 to 77.1% in 2013 indicates successful public health interventions during this period, likely influenced by increased awareness and accessibility of vaccination services [15,16,17,18]. However, the subsequent decline to 61.2% in 2019 raises concerns about sustainability and the potential impact of external factors, such as economic instability, health system challenges, or changes in public health policy [19,20,21,22]. This fluctuation underscores the necessity for continuous monitoring and adaptive strategies to ensure that immunization…