Answer: Contact between infected saliva and an open wound.
Explanation: This is because the virus doesn’t spread in air or water, or through casual contact.
HIV is transmitted through bodily fluids that include:
• blood
• semen
• vaginal fluids
• rectal fluids
• breast milk
An open wound contains blood and therefore can be infected when in contact with an infected saliva.
I hope you're clear on this Isabella.