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Contagious parotitis (Mumps) - Mumps virus. Virulence: invades parotid salivary glands, and sometimes brain, meninges, pancreas, testes, ovaries. Common in children before vaccine - epidemics in Fall. 20-40% subclinical. Develop permanent immunity. Transmission: Saliva, nasal secretions - direct, indirect contact - not highly contagious. ................
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