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The most efficient route of hepatitis B transmission is

  • A.airborne spread from an infected patient
  • B.consumption of contaminated shellfish
  • C.percutaneous exposure to infected blood
  • D.the faecal-oral route

Answer: C

Direct blood-to-blood exposure through a needlestick or shared injecting equipment carries the highest risk, with mucosal and non-intact skin exposure to blood, semen and other fluids also effective. Childbirth and sexual contact are the other major routes.

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