Bill observed a car accident and helped the victims. The driver was bleeding. Which blood-borne illness could Bill have contracted? Check all that apply.

HIV, hepatitis B, and hepatitis C can all be transmitted through infected blood entering another person’s bloodstream, such as through an open cut or needle-stick. Helping a bleeding driver does not automatically mean Bill was infected; the risk depends on whether the driver’s blood contacted Bill’s broken skin or mucous membranes. Each listed illness is blood-borne, so all three apply.

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