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Hepatitis A virus can survive outside the body for

  • A.only while kept frozen
  • B.months under some conditions
  • C.no more than a few minutes
  • D.about two hours at most

Answer: B

Lacking an envelope, the virion tolerates drying and a wide range of conditions and remains infectious for long periods on surfaces and in water. That persistence underlies its transmission by shellfish, salads and contaminated water supplies.

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