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Chapter 37. Reoviruses, Rotaviruses, and Caliciviruses
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A 36-year-old man enjoyed a meal of raw oysters. Twenty-four hours later, he became ill, with a sudden onset of vomiting, diarrhea, and headache. The most likely cause of his gastroenteritis is
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This virus is the most important cause of gastroenteritis in infants and young children. It causes infections that are often severe and may be life threatening, especially in infants.
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An outbreak of epidemic gastroenteritis occurred at a wooded summer camp 24 hours after a party for visiting families. Some of the visiting parents also became ill. Samples taken 2 weeks later from the well that was the source of drinking water at the camp were negative for fecal coliforms. The most likely source of the outbreak was
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(A) Mosquitoes or ticks, present in high numbers in the area
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(B) Contaminated food served at the party
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(C) A nearby stream used for fishing
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(D) A visiting parent who was developing pneumonia
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This viral gastroenteritis agent has a segmented, double-stranded RNA genome and a double-shelled capsid. It is a member of which virus family?
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Rotavirus and Norwalk virus are distinctly different viruses. However, they share which one of the following characteristics?
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(A) Fecal–oral mode of transmission
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(B) They mainly cause disease in infants and young children.
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(C) They induce generally mild disease in young children.
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(D) Infection patterns show no seasonal variation.
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(E) A double-stranded RNA genome
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