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Sexually Transmitted and Bloodborne Diseases

  • In Peel, the incidence of Acquired Immunodeficiency Syndrome (AIDS) has remained low and stable since 1997 (1.4 cases per 100,000 or less). Any variability from year to year may be due to the small number of cases.

  • Chlamydia is not only the most common sexually transmitted disease in Peel, but also the most commonly reported communicable disease.

  • In Peel, the incidence of chlamydia increased by approximately 71% between 1996 and 2003. This increase may be due to improved screening and case finding by physicians.34

  • The incidence of gonorrhea in Peel has remained stable from 2000 to 2003 (approximately 30 to 34 cases per 100,000).

  • Persons aged 15 to 24 years have the highest incidence of chlamydia and gonorrhea.

  • There were one or two new cases of infectious syphilis in Peel per year since 1999; however in 2003, the number of cases increased to nine. Toronto experienced a similar increase.35

  • In Peel, the incidence of hepatitis B has been low since 1997 (approximately one case per 100,000 or less). Incidence of hepatitis B was highest among people aged 25 to 29.

  • Hepatitis C incidence has steadily decreased since 1995. Incidence of hepatitis C was highest in those aged 30 years and older.

  • The incidences of both Hepatitis B and C were generally higher in males compared to females, especially in the high incidence age groups identified above.
  Chapter Two - Sexually Transmitted and Bloodborne Diseases (PDF file 63 KB, 8 pages)

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