HIV Transmission: Can Scratches or Cuts Transmit the Virus?
No. HIV is not transmitted by casual skin contact, including scratches or superficial cuts that do not draw blood.
Transmission Requirements
- HIV must enter the bloodstream directly.
- Requires: infectious fluid (blood, semen, vaginal/rectal fluids, breast milk) + portal of entry (needle puncture, mucosal membrane, deep open wound).
- Intact skin is an effective barrier; HIV cannot penetrate it.
What Does Transmit HIV
- Condomless anal/vaginal sex.
- Sharing injection equipment.
- Perinatal (mother to child during pregnancy, birth, breastfeeding).
- Transfusion/transplant (now rare with screening).
- Occupational needlestick (hollow bore, deep, visible blood).
What Does NOT Transmit HIV
- Hugging, kissing (closed mouth), shaking hands.
- Sharing toilets, dishes, towels.
- Insect bites.
- Superficial scratches without blood exposure.
PEP (post-exposure prophylaxis) is for significant exposures only. Casual contact poses zero risk.
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