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Hastings and Prince Edward Public Health

HIV, PrEP and PEP

What is HIV?

HIV stands for human immunodeficiency virus.  It is a virus that attacks the body’s immune system.

How do you get HIV?

The two main ways that HIV can be passed are:

  • through sex
  • by sharing needles or other equipment to inject drugs (including steroids or hormones)

People at higher risk include those who:

  • share drug use equipment
  • exchange sex for drugs or money
  • have sex with multiple partners without using a condom
  • engage in condomless sexual activity with someone whose HIV status is unknown
  • engage in condomless sexual activity with an HIV-positive individual who is not on treatment
  • received a diagnosis of a sexually transmitted infection, such as syphilis, gonorrhea or chlamydia

HIV testing

The only way to know for sure whether you have HIV is to get tested. Learn where you can get HIV testing.

U=U (undetectable = untransmittable)

People living with HIV who are on medication and maintain an undetectable amount of virus in their blood can lead a long, healthy life without the fear of passing HIV to their sexual partner. Learn more about U=U.

HIV pre-exposure prophylaxis (PrEP)

If you engage in frequent high risk activities, take a pill a day to prevent acquiring HIV. Learn more about PrEP.

Post-exposure prophylaxis (PEP)

If you think you’ve been exposed to HIV, seek HIV PEP medication within 72hours – PEP can rid your body of the virus before it takes hold. Learn more about PEP.

More information

Find out more information visit these websites:

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As of Jan. 1, 2025 Hastings Prince Edward Public Health; Kingston, Frontenac and Lennox & Addington Public Health; and Leeds, Grenville and Lanark District Health Unit merged to form Southeast Public Health (SEPH).

You will begin to see the new Southeast Public Health branding appear on our resources and advertising materials. You will continue to see some documents using the legal name South East Health Unit.

Partners and members of the public should continue to engage with their local public health offices as usual and connect with Southeast Public Health on our new website and social media: