The short version
PEP: after a possible exposure
PEP stands for post-exposure prophylaxis. CDC says it must be started within 72 hours after a possible HIV exposure, and sooner is better. A typical course is taken for 28 days when prescribed.
PrEP: before possible future exposure
PrEP stands for pre-exposure prophylaxis. It is for people without HIV who may be exposed through sex or injection drug use and is used as an ongoing prevention strategy.
Can someone move from PEP to PrEP?
Sometimes. If ongoing HIV exposure is a concern, CDC advises talking with a healthcare provider about PrEP. The clinician can determine the appropriate transition and testing plan.
Does PrEP prevent other STIs?
No. CDC notes that PrEP reduces the chance of getting HIV but does not prevent other STIs or pregnancy. Other prevention measures and routine STI testing may still be appropriate.
Where can I ask about PrEP or PEP in Palm Beach County?
The Wellington provider linked by Get Tested PB lists both PrEP and PEP among its services. Public-health and other local options are also included in our Palm Beach County resource guide.
PEP after a possible exposure → Local resources
This page is general education, not personal medical advice. Claims are checked against primary public-health sources. Get Tested PB does not invent clinician reviewers; if clinical review is ever added, the reviewer will be identified clearly.