11.4 HIV, Viral Hepatitis, and Other Pathogens: Prevention, Testing, and Linkage
Key Takeaways
NCPRSS applicants must complete six hours of HIV/other pathogens education within the last six years.
HIV and hepatitis C spread mainly through blood, including shared needles and other injection equipment; HIV is not spread by saliva, sweat, or casual contact.
CDC recommends HIV testing at least once for everyone aged 13 to 64, and one-time hepatitis C and hepatitis B testing for all adults, with more frequent testing for people who inject drugs.
Direct-acting antiviral pills cure more than 95% of hepatitis C in 8 to 12 weeks, and current drug use is not a medical reason to withhold treatment.
After a needlestick, wash with soap and water, report immediately, and get medical evaluation right away, because HIV PEP must start within 72 hours.
11.4 HIV, Viral Hepatitis, and Other Pathogens: Prevention, Testing, and Linkage
Note
Quick Answer: NCPRSS applicants must complete six hours of HIV/other pathogens education within the last six years, because people who use drugs face high risks of HIV, hepatitis C (HCV), hepatitis B (HBV), and bacterial infections. Peers help by sharing accurate transmission facts, promoting sterile supplies and vaccination, encouraging routine testing, and linking people to prevention (PrEP), treatment (HIV antiretroviral therapy and curative HCV medication), and wound and infection care. On the job, peers use standard precautions and follow their employer's bloodborne pathogens exposure plan.
How the Major Pathogens Spread
| Pathogen | Main transmission routes | Not spread by | Prevention tools |
|---|---|---|---|
| HIV | Blood; semen and pre-seminal fluid; rectal and vaginal fluids; breast milk; sharing needles or syringes | Saliva, tears, sweat, hugging, sharing dishes, toilets | Condoms, sterile injection equipment, PrEP, PEP, treatment as prevention |
| Hepatitis C (HCV) | Blood, mainly through shared needles, syringes, and other injection equipment (cookers, cottons, water) | Casual contact, food, water, coughing | Sterile equipment for every injection; not sharing straws or pipes that can carry blood |
| Hepatitis B (HBV) | Blood, semen, and other body fluids; sex; shared needles; birth | Casual contact, food, water | Vaccine, condoms, sterile equipment |
| Hepatitis A (HAV) | Fecal-oral route; outbreaks have spread among people experiencing homelessness and people who use drugs | — | Vaccine, handwashing, sanitation |
Tip
Hepatitis C can survive in dried blood on equipment, so sharing cookers, cottons, and rinse water carries risk even when the syringe is new.
Prevention Tools Peers Should Know
- Syringe services programs (SSPs): provide sterile supplies and testing and are associated with about a 50% reduction in HIV and HCV incidence (CDC). See Section 7.3.
- HIV pre-exposure prophylaxis (PrEP): daily oral pills, an injection every two months (cabotegravir), or, since FDA approval on June 18, 2025, a twice-yearly injection (lenacapavir), which CDC added to its PrEP recommendations in 2025. The long-acting injectables are approved to reduce sexually acquired HIV; for people who inject drugs, CDC guidance supports daily oral PrEP.
- HIV post-exposure prophylaxis (PEP): a 28-day course of HIV medicines that must start as soon as possible and within 72 hours of a possible exposure.
- Treatment as prevention (U=U): people with HIV who take antiretroviral therapy and keep an undetectable viral load do not transmit HIV through sex ("Undetectable = Untransmittable").
- Vaccines: hepatitis B vaccination is recommended for all adults aged 19 to 59 and for adults 60 and older with risk factors; hepatitis A vaccination is recommended for people who use drugs and people experiencing homelessness. There is no vaccine for HCV or HIV.
Testing Recommendations (CDC)
| Infection | Who should be tested | How often |
|---|---|---|
| HIV | Everyone aged 13 to 64 | At least once; at least yearly for people at higher risk, including people who inject drugs |
| Hepatitis C | All adults 18 and older, and every pregnant person during each pregnancy | At least once; regularly for people who keep injecting drugs |
| Hepatitis B | All adults 18 and older | At least once, using a three-part blood test |
Testing is often available free at SSPs, health departments, and community clinics, sometimes with same-day rapid results.
Treatment Has Changed the Picture
- HIV: antiretroviral therapy (ART) lets people with HIV live long, healthy lives and prevents sexual transmission once the virus is undetectable.
- Hepatitis C: direct-acting antiviral pills cure more than 95% of people in 8 to 12 weeks. Current use of drugs or alcohol is not a medical reason to withhold treatment, and many state Medicaid programs have removed sobriety requirements. Cure does not protect against reinfection, so ongoing harm reduction matters.
- Hepatitis B: chronic HBV is managed with antiviral medicines that suppress the virus; vaccination prevents it.
Peers can be the bridge that turns a positive test into treatment: offering to attend the first appointment, helping with insurance, and supporting medication adherence.
Other Pathogens and Infections
| Condition | Why it matters in peer work | Peer response |
|---|---|---|
| Skin and soft-tissue infections (including MRSA) | Common with injection; abscesses can spread | Encourage early care for red, hot, swollen, or draining sites |
| Infective endocarditis | Heart-valve infection linked to injection drug use; can be fatal | Fever, chills, and new shortness of breath after injecting need same-day care |
| Xylazine-associated wounds | Severe wounds can appear away from injection sites (Section 7.3) | Link to low-barrier wound care |
| Syphilis and other sexually transmitted infections | Rates have risen in recent years | Encourage testing; share free testing sites |
| Tuberculosis (TB) | Airborne; higher risk in shelters and congregate settings | Encourage evaluation for a cough lasting three weeks or more, especially with fever, night sweats, or weight loss |
Protecting Yourself: Standard Precautions and Exposure Response
Standard precautions treat all blood and certain body fluids as potentially infectious: hand hygiene, gloves when contact with blood is possible, never recapping needles, and using puncture-resistant sharps containers. Employers whose workers have occupational exposure must follow the OSHA Bloodborne Pathogens Standard (29 CFR 1910.1030), which requires an exposure control plan, training, protective equipment, an offer of hepatitis B vaccination at no cost, and post-exposure evaluation.
If a peer is stuck by a used needle:
- Wash the area right away with soap and water (do not squeeze or use bleach).
- Report the exposure to the supervisor immediately, as the employer's plan requires.
- Get medical evaluation right away, because HIV PEP works best when started within hours and must begin within 72 hours; hepatitis B vaccination status and HCV follow-up testing will also be checked.
For context, CDC estimates the average risk of HIV after a needlestick from a source with HIV at about 0.3%, and of HCV after a needlestick from a source with HCV at about 0.2%. HBV risk is much higher for unvaccinated people, which is one reason vaccination matters.
Stigma, Privacy, and the Peer Role
HIV and hepatitis status is sensitive health information protected by HIPAA, 42 CFR Part 2 where it applies, and state laws, which are often stricter for HIV. Peers share status only with consent and model non-judgmental language: "living with HIV," not "infected"; "people who inject drugs," not "IV drug abusers." Many peers share their own testing or treatment experience, which can make testing feel normal and treatment feel possible.
While collecting used syringes at an outreach event, a peer specialist is stuck by a needle. What is the correct sequence of actions?
Squeeze the wound to make it bleed, pour bleach on it, and wait to see whether any symptoms develop over the next few weeks.
Finish the outreach shift, then mention the incident at the next weekly supervision meeting so it can be documented.
Wash with soap and water, report it right away, and get medical evaluation the same day.
Ask the person who used the syringe whether they have HIV, and seek care only if they say yes.
A participant with chronic hepatitis C says, "No doctor will treat me while I'm still using, and the treatment never works anyway." Which response is accurate?
Hepatitis C medicines cure most people in 8 to 12 weeks, and current drug use is not a medical reason to deny treatment.
Hepatitis C treatment is only offered after at least six months of documented abstinence, so the participant should focus on that goal first.
There is still no cure for hepatitis C; treatment can only slow liver damage, so the participant should mainly avoid alcohol.
Once someone has had hepatitis C, they are immune for life, so there is no need for harm reduction after any treatment.
A participant who injects drugs asks how they can lower their HIV risk. Which combination best reflects current prevention guidance?
Rely on the twice-yearly lenacapavir injection alone, because it is approved specifically to prevent HIV from shared needles and syringes.
Use sterile equipment every time, ask about daily oral PrEP, and test regularly.
Get the hepatitis B vaccine, because it also prevents HIV infection when given in the full series.
Wait to take PEP after each injection, since PEP is designed for repeated routine use instead of PrEP.
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