<p>Between February 13, 2023, and July 16, 2023, a total of 1917 mumps cases were reported in the Zambezi Region. Interventions included active case search, supportive treatment, health education, and advising patients to self-isolate for 7 days. Tobias Hainyeko Primary School experienced the highest attack rate at 36%, followed by Alfe Sampofu at 23%. The age group most significantly affected was 5-9 years, accounting for 51.3% of cases, followed by the 0-4 years age group, which constituted 26.0% of cases. Females experienced slightly higher infection rates at 51%. The outbreak displayed a progressively increasing peak in the epidemiological curve, indicating ongoing transmission.</p>