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Accidental exposure to HIV Contact with: - blood - body fluids - tissues Types of exposure: - percutaneous - mucous membrane - non-intact skin - intact skin
Factors affecting risk of infection 1. Type of exposure: • Percutaneous: 0.3% risk • Mucus membrane: 0.09% risk • Non-intact skin: risk less than mucus membrane • Intact skin: no cases documented 2. Exposure to blood has higher risk than other fluids or tissues
Factors affecting risk of infection 3. Risks higher with larger amount of blood: • apparatus visibly contaminated with patient’s blood • procedure involving needle placed directly into blood vessel • deep injury • hollow bore needles 4. Risk higher when source has end stage HIV/AIDS