Which statement about HIV is correct?

• A. HIV is easily transmittable in the EMS field.
• B. There is no vaccine against HIV infection.
• C. HIV is transmitted exclusively via blood.
• D. HIV is far more contagious than hepatitis B.

Answer: (B)

The key idea is understanding HIV prevention and how it’s transmitted. There is no approved vaccine to prevent HIV infection, which is why this statement is true. Research into an HIV vaccine continues, but so far no vaccine has been proven safe and effective for public use, so relying on vaccination to prevent HIV isn’t possible yet.

In EMS practice, protection comes from standard precautions and post-exposure protocols. HIV can be transmitted through several body fluids—blood, semen, vaginal and rectal fluids, and breast milk—not only blood, so saying it’s transmitted exclusively via blood isn’t accurate. Also, while exposure can pose a risk, transmission is not considered easy or guaranteed when proper protective measures are in place; the idea of it being easily transmittable doesn’t fit with how precautions reduce risk. Finally, hepatitis B is more contagious than HIV, so the claim that HIV is far more contagious than HBV isn’t correct.

So, the absence of an HIV vaccine best matches the actual state of prevention, with vaccines for HIV not yet available and ongoing research, while transmission in real-world EMS scenarios is mitigated by precautions and post-exposure care.