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Discussion

Hepatitis A virus is transmitted principally by

  • A.the faecal-oral route
  • B.transfusion of contaminated blood
  • C.the bite of an infected mosquito
  • D.inhalation of infected droplets

Answer: A

Spread is by person-to-person contact and by food or water contaminated with faeces, which is why outbreaks follow poor sanitation and food handled by an infected worker. Blood-borne transmission is possible but rare, and there is no arthropod or respiratory route.

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