Chapter 7: PEP: The 72-Hour Window
The Emergency Play
📋 Session Overview
Duration: 60-75 minutes
Part: Part III - Medical Shields
MATCH Connection: Medications (M)
🎯 Learning Objectives
- Understand PEP as emergency HIV prevention
- Know the CRITICAL 72-hour window (sooner = better)
- Identify when to consider PEP
- Know where to access PEP immediately
- Understand the 28-day course and follow-up testing
- Distinguish between PEP (emergency) and PrEP (ongoing)
💡 Key Concepts from the Ebook
- PEP = Post-Exposure Prophylaxis: Medication taken AFTER potential HIV exposure
- 72-hour window: Must start within 3 days; every hour counts
- Not a substitute: Emergency use only, not for regular prevention
- 28-day course: Take HIV meds once or twice daily for full month
- If using PEP repeatedly: Sign to consider PrEP instead
📦 Materials Needed
- List of local PEP access points (ERs, urgent care, clinics)
- Timeline visual: 72-hour window
- Sample PEP medication packaging (if available)
- Handout: "When to Seek PEP" decision tree
- Emergency wallet cards with PEP info
🚀 Opening Activity (10 minutes)
Emergency Response: How Fast Would You Act?
Scenario: "It's Saturday night, 11pm. The condom broke during sex with a new partner whose HIV status you don't know. What do you do?"
Group brainstorm: What actions would you take? In what order? How quickly?
Reveal: Ideal response = Seek PEP within hours, not days. Introduce the 72-hour window concept.
📚 Core Content (30 minutes)
"PEP (Post-Exposure Prophylaxis) is the emergency brake in your safER sex toolkit. It is a course of medication taken after a potential exposure to HIV to prevent the virus from taking hold. It is not a substitute for regular prevention methods like PrEP or condoms, but it is a vital safety net for those moments when things don't go as planned."
Part 1: The 72-Hour Window (10 minutes)
🚨 MOST CRITICAL THING TO KNOW (from the ebook):
"The most critical thing to know about PEP is the time limit: it must be started within 72 hours (three days) of the potential exposure. The sooner you start, the more effective it is. Every hour counts. If you think you've been exposed to HIV, do not wait."
| Time After Exposure |
Action |
Effectiveness |
| 0-24 hours |
BEST window to start PEP |
Highest effectiveness |
| 24-48 hours |
Still very effective |
Good protection |
| 48-72 hours |
Still worth starting |
Protection decreases but still possible |
| After 72 hours |
Too late for PEP |
Not effective; test at 3 months instead |
Part 2: When to Consider PEP (8 minutes)
From the ebook, PEP is typically prescribed after:
- Unprotected sex with a partner whose HIV status is unknown or positive and who is not virally suppressed (U=U)
- Condom breakage or slippage with a partner whose status is unknown or positive
- Sharing needles or works for injection drug use
- Sexual assault
Key Principle
When in doubt, seek evaluation. Healthcare providers can help assess risk and decide if PEP is appropriate. Better to ask and not need it than to wait and regret it.
Part 3: How to Get PEP (7 minutes)
From the ebook: "PEP is a prescription medication. You can get it from:"
- Emergency rooms (ERs) - open 24/7
- Urgent care clinics
- Sexual health clinics
- Your primary care provider (if available quickly)
When you go, be clear and direct: "I need to start PEP because of a potential HIV exposure."
What will happen:
- Provider will ask about the exposure (when, type of contact)
- You'll be tested for HIV (must be negative to start PEP)
- You'll receive a starter pack or full prescription
- Follow-up appointments will be scheduled
Part 4: What to Expect on PEP (5 minutes)
From the ebook:
| Aspect |
Details |
| Testing |
HIV test before starting to confirm negative status |
| The Course |
28 consecutive days of HIV medications (once or twice daily) |
| Side Effects |
Possible nausea, fatigue; doctor can help manage |
| Follow-Up |
HIV testing after completion: 4 weeks and 3 months |
| Cost |
Often covered by insurance; assistance programs available |
Completing the Full Course
Critical: Must take ALL 28 days, even if side effects occur or you feel fine. Stopping early reduces effectiveness. Set daily phone alarms as reminders.
Part 5: PEP IS NOT PrEP (Critical Distinction)
From the Ebook:
PrEP is taken before exposure to prevent HIV. It is for ongoing prevention.
PEP is taken after exposure to stop HIV from establishing itself. It is for emergency use only.
"If you find yourself using PEP more than once, it is a strong signal that you should talk to your doctor about starting PrEP for a more consistent, long-term prevention strategy."
💬 Discussion Questions (10 minutes)
Facilitate Group Discussion:
- What barriers might prevent someone from seeking PEP within 72 hours?
- Stigma, cost concerns, not knowing it exists, fear of judgment, geography
- How can we normalize PEP as an emergency tool like we normalize emergency contraception?
- Education, accessibility, de-stigmatizing language
- What would you tell a friend who's considering PEP but is scared or ashamed?
- Practice compassionate, non-judgmental responses
🎨 Interactive Activity (15 minutes)
PEP Access Mapping
Purpose: Know where to go BEFORE an emergency happens.
Activity:
- Participants use phones to find nearest PEP provider (ER, urgent care, sexual health clinic)
- Save address and phone number in phones
- Calculate travel time from home/work
- Identify 24/7 options vs business hours only
Create wallet cards: Name, address, phone of 2-3 local PEP access points. Participants keep in wallet.
🔄 Closing & Reflection (10 minutes)
Chapter 7 Takeaway
"PEP is a powerful second chance. Know the 72-hour window, know where to get it, and don't hesitate to use it. It is a critical part of the modern safER sex landscape."
Reflection Prompt:
"If you or someone you know ever needs PEP, what's the first thing you'll do after reading this chapter?"
Take-Home Challenge
- Save local PEP provider info in phone contacts
- Share PEP info with 2 people in your network
- If sexually active: Keep PEP access info in wallet
📌 Preview Next Session
Next: Chapter 8: Doxy-PEP: A New Tool in your Toolkit—a breakthrough antibiotic that can prevent bacterial STIs after sex. Over 70% reduction in syphilis and chlamydia risk.
Resources to Share
- Local PEP providers list (with 24/7 options highlighted)
- PEP wallet cards (printable)
- National hotline: 1-888-448-4911 (PEPline for clinician consultation)
HARNESS Curriculum | Chapter 7 Complete
© Christopher Zacharie