<p>A cross-sectional study design was used where epidemiological investigations and active surveillance were conducted. Descriptive statistics were used to describe the epidemiology of laboratory-confirmed cases and vaccination status for cases detected between 2 December 2022 - 17 March 2023. We also describe vaccination coverage trends against set targets by age category for the measles vaccination campaign that began on December 12, 2023. The epidemic curve was used to illustrate the outbreak's progression and to monitor the impact of the vaccination campaign and other control measures.</p>