Amambulugga ndwadde ereetebwa akawuka akayitibwa Mumps virus. Amambulugga mangu nnyo okusaasaanyizibwa mu bantu ababeera ewamu anti endwadde eno eyitira mu mukka gwe tussa, oba ebintu ng'amalusu oba eminyira gy'omulwadde singa bikutonnyera ku maaso, mu nnyindo oba mu kamwa.