Infection Control · single question

Transmission risk from HIGHEST to LOWEST in the dental office is:

  1. Hepatitis B > Hepatitis C > HIV
  2. Hepatitis B > HIV > Hepatitis C
  3. HIV > Hepatitis B > Hepatitis C
  4. Hepatitis C > Hepatitis B > HIV
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Correct answer: A. Hepatitis B > Hepatitis C > HIV

  • A. Correct. Transmission rates from needlestick injury: HEPATITIS B (HBeAg positive): ~30% (highest), HEPATITIS C: ~1.8%, HIV: ~0.3% (lowest). Order: HBV > HCV > HIV. The recall lists (0.3% / 1.8% / 30%) confirming HIV < HCV < HBV.
  • B. Incorrect. This places HIV above Hepatitis C, which is incorrect.
  • C. Incorrect. HIV has the lowest transmission risk of the three bloodborne pathogens.
  • D. Incorrect. Hepatitis B has higher transmission risk than Hepatitis C.

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