<p>We conducted a descriptive cross-sectional study. We reviewed health facility registers and conducted contact tracing in the community and schools. Face-to-face interviews were conducted to obtain vaccination and travel history as well as possible linkage to a confirmed case. A confirmed case was any person with a laboratory-confirmed measles IgM in the sub-district, from the 8th of November 2022 to date. We collected 73 serum samples for IgM antibody detection by enzyme-linked immunosorbent assay (ELISA). Calculated descriptive statistics and attack rates.</p>