Answer:
1. Having unprotected sex with someone who is infected.
2. An infected mother may pass the virus to her child during pregnancy.
3.Using needles or syringes that have been used by people who are infected.
Step-by-step explanation:
1. Blood transmission.
2.unsafe sex.
3.HIV is spread mainly by having sex or sharing injection drug equipment, such as needles, with someone who has HIV.
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