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Chapter 187. Mumps

Chia sẻ: Nguyen Nhi | Ngày: | Loại File: PDF | Số trang:6

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Chapter 187. Mumps

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Mumps is an acute, systemic, communicable viral infection whose most distinctive feature is swelling of one or both parotid glands. Involvement of other salivary glands, the meninges, the pancreas, and the gonads also is common. Etiologic Agent Mumps virus, a paramyxovirus, is pleomorphic and has a diameter ranging from 100 to 300 nm. The virion is composed of RNA and seven proteins. The RNA is surrounded by an envelope composed of glycoproteins, including a hemagglutinin-neuraminidase (HN), a hemolysis cell fusion antigen (F), and a matrix envelope protein (M). A fourth protein (SH) may also be membrane-associated. There are three...

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