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Discussion

Naked viruses are typically well suited to transmission by

  • A.insect bite only
  • B.the faecal-oral route
  • C.direct blood contact only
  • D.routes requiring the particle to stay moist

Answer: B

A protein capsid survives stomach acid, bile and drying far better than a lipid envelope, so naked viruses persist in the environment and on surfaces. Enveloped viruses more often need close or moist contact because their lipid is fragile.

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