MUMPS Mumps virus is the most common cause of parotid glandenlargement in children. In severe cases, it can also causeorchitis and aseptic meningitis. Pathogenesis Transmission is through the respiratory route viadroplets, saliva, and fomites Primary replication occurs in the nasal mucosa orupper respiratory mucosa → infects mononuclear cellsand regional lymph nodes → spills over to […]