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Gay and Bisexual Men
Ontarians from Africa and the Caribbean
People who Use Injection Drugs
Aboriginal Peoples
Women who are Represented in or Engage in High risk activities with the Above Communities
HIV Testing
Ontario HIV/AIDS Infection Rates
Ontario' Response to HIV/AIDS
Ontario Advisory Committee on HIV/AIDS (OACHA)
Information for
Health Care Professionals

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HIV and AIDS in Ontario
What are HIV and AIDS?

HIV is a life-threatening illness caused by the human immunodeficiency virus (HIV). To become infected, people must get the virus into their bloodstreams. The virus is transmitted primarily during unprotected vaginal or anal sex (i.e., sex without a condom), and when people share needles or other equipment that have become contaminated with HIV-infected blood to take drugs.

Once someone is infected with HIV, the virus begins to attack healthy cells in the blood, which weakens the person's immune system. When enough cells have been killed and the person's ability to fight off other illnesses and infections is severely threatened, he or she will be diagnosed with AIDS.

The HIV Epidemic in Ontario
The HIV epidemic in Ontario continues to grow. HIV affects some communities more than others. Communities most affected by HIV/AIDS are :

  • gay and bisexual men
  • Ontarians from Africa and the Caribbean
  • people who inject drugs
  • Aboriginal Peoples
  • women who are represented in the above groups or engage in high-risk activities with them (i.e. share needles or other drug equipment and/or engage in sexual activity).

There are over 26,000 people living with HIV/AIDS in Ontario. While treatment has made it possible for people to live longer with HIV, there is still no cure for AIDS. Since the beginning of the epidemic, more than 8,700 Ontarians have died of AIDS.

Ontario's approach to HIV/AIDS includes prevention, education, testing treatment, support services and research.

For general information about HIV/AIDS, including the ways HIV is transmitted, visit the web site.

For immediate assistance and referral, please call the AIDS Hotline at :
Toronto : 416-392-2437

For more information
Tel: 1-866-532-3161
(Toll-free in Ontario only)
TTY 1-800-387-5559
Hours of operation: 8:30am - 5:00pm
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