Background: Mumps is slightly neglected compared to other infectious diseases. Mumps is a vaccine-preventable disease, causes inflammation of salivary glands and may cause life-threatening complications (encephalitis, deafness and orchitis). Its vaccine is not included in Namibia state Expanded Programme on Immunization (EPI) and no published vaccination data in private health sector. Globally, 234,082 cases were reported. Africa, including Namibia, has major share of these cases. Okahao district had been reporting a peak of mumps cases from January 2023. We analysed mumps surveillance data to provide evidence for mumps infections and initiate interventions.