<prompt> Warthin Finkeldey giant cells are seen in:MumpsRubellaMeaslesPolio  <response>: c. MeaslesRef: Nelsons 20e p 1542-1547, Ghai 8e p 213-214Fusion of infected cells results in multinucleated giant cells, the Warthin-Finkeldey giant cells that are pathognomonic for measles, with up to 100 nuclei and intracytoplasmic and intranuclear inclusions. 