1. Use of Condoms: Male and female condoms are highly effective in providing a physical barrier that prevents the exchange of bodily fluids during intercourse. 2. Dental Dams: These are used during oral sex to prevent the transmission of infections. 3. Regular Testing: Regular STI testing helps in early detection and treatment, reducing the risk of spreading infections. 4. Vaccinations: Vaccines for HPV and hepatitis B can protect against these viruses. 5. Communication: Open and honest communication with sexual partners about STI status and safe sex practices can significantly reduce risks.