The tables below summarize reportable communicable disease data for the City of Toronto, for 2016 and the previous 5-year period (2011-2015). Monthly surveillance data for the current year are posted to Toronto Open Data.

All reports of communicable diseases for Toronto included in this report were collected by Toronto Public Health (TPH) under the authority of the Health Protection and Promotion Act, Ontario Regulations 559/91, which mandates the notification of all confirmed or suspect reportable diseases to the Medical Officer of Health for the jurisdiction where the patient resides.

Reports of diseases included in this document are for individuals who lived in Toronto at the time of their diagnosis. All data for Toronto included in these tables were extracted from the Integrated Public Health Information System (iPHIS), the provincial communicable disease information system.

Incidence rates for Toronto were calculated using population estimates extracted from intelliHealth on November 3, 2016.

NOTE:  Only those diseases with at least one reported case in 2016 are included on this page.

Disease

Cases

(2016)

Rate per 100,000 population

(2016)

Cases

(5-year mean)

Rate per 100,000 population

(5-year mean)

Chlamydia 11,749 415.7 10,049 362.7
Influenza 3,135 110.9 2,375 85.7
Gonorrhea 2,901 102.6 2,302 83.1
Syphilis, infectious 844 29.9 568 20.5
Campylobacter enteritis 781 27.6 913 33.0
Salmonellosis 664 23.5 614 22.2
Hepatitis C 634 22.4 769 27.7
Hepatitis B, carriers 601 21.3 1,072 38.7
Chickenpox 446 15.8 1,034 37.3
HIV 445 15.7 459 16.6
Hepatitis B, unclassified 443 15.7 222 8.0
Amebiasis 429 15.2 406 14.6
Giardiasis 388 13.7 387 14.0
Tuberculosis 301 10.6 282 10.2
Syphilis, late latent 249 8.8 275 9.9
Streptococcus pneumoniae, invasive 186 6.6 200 7.2
Shigellosis 163 5.8 111 4.0
Streptococcal infections, Group A invasive 137 4.8 117 4.2
Cryptosporidiosis 87 3.1 51 1.8
Cyclosporiasis 69 2.4 30 1.1
Yersiniosis 68 2.4 54 2.0
Malaria 67 2.4 79 2.8
Encephalitis/ Meningitis, viral 65 2.3 39 1.4
Pertussis 50 1.8 72 2.6
Hepatitis A 33 1.2 34 1.2
Listeriosis 32 1.1 14 0.5
Legionellosis 30 1.1 44 1.6
Verotoxin-producing E. coli infection 25 0.9 33 1.2
Lyme disease 23 0.8 30 1.1
Typhoid fever 23 0.8 22 0.8
AIDS 22 0.8 41 1.5
West Nile Virus 22 0.8 30 1.1
Encephalitis/ Meningitis, bacterial 19 0.7 20 0.7
Hepatitis B, cases 15 0.5 12 0.4
Streptococcal infections, Group B neonatal 12 0.4 16 0.6
Paratyphoid fever 11 0.4 13 0.5
Mumps 10 0.4 7 0.2
Meningococcal disease, invasive 5 0.2 7 0.2
Syphilis, other 4 0.1 4 0.1
Encephalitis/ Meningitis, fungal 3 0.1 2 <0.1
Encephalitis/Meningitis,  unclassified 3 0.1 6 0.2
Ophthalmia neonatorum 3 0.1 1 <0.1
Brucellosis 2 0.1 2 <0.1
Leprosy 2 0.1 2 <0.1
Acute flaccid paralysis 1 <0.1 <0.1 <0.1
Creutzfeldt-Jakob disease 1 <0.1 3 0.1
Syphilis, congenital 1 <0.1 <0.1 <0.1

These are infections caused by infectious agents that are found in bodily fluids such as blood, semen, vaginal secretions, breast milk and saliva. Transmission generally occurs from person to person via sexual contact, although other modes of transmission exist (e.g. IV drug use and perinatal transmission).

Sexually Transmitted and Bloodborne Cases

(2016)

Rate per 100,000 population

(2016)

Cases

(5-year mean)

Rate per 100,000 population

(5-year mean)

Chlamydia 11,749 415.7 10,049 362.7
Gonorrhea 2,901 102.6 2,302 83.1
Syphilis, infectious 844 29.9 568 20.5
Hepatitis C 634 22.4 769 27.7
Hepatitis B, carriers 601 21.3 1,072 38.7
HIV 445 15.7 459 16.6
Hepatitis B, unclassified 443 15.7 222 8.0
Syphilis, late latent 249 8.8 275 9.9
AIDS 22 0.8 41 1.5
Hepatitis B, cases 15 0.5 12 0.4
Syphilis, other 4 0.1 4 0.1
Ophthalmia neonatorum 3 0.1 1 <0.1
Syphilis, congenital 1 <0.1 <0.1 <0.1

These are diseases caused by infectious agents that are shed in the feces and can contaminate food or water sources. Transmission occurs primarily through ingestion of contaminated food, beverages or water, or more rarely, though direct or fecal-oral contact with an infected person.

Enteric, Food & Waterborne Cases

(2016)

Rate per 100,000 population

(5-year mean)

Cases

(2016)

Rate per 100,000 population

(5-year mean)

Campylobacter enteritis 781 27.6 913 33.0
Salmonellosis 664 23.5 614 22.2
Amebiasis 429 15.2 406 14.6
Giardiasis 388 13.7 387 14.0
Shigellosis 163 5.8 111 4.0
Cryptosporidiosis 87 3.1 51 1.8
Cyclosporiasis 69 2.4 30 1.1
Yersiniosis 68 2.4 54 2.0
Hepatitis A 33 1.2 34 1.2
Listeriosis 32 1.1 14 0.5
Verotoxin-producing E. coli infection 25 0.9 33 1.2
Typhoid fever 23 0.8 22 0.8
Paratyphoid fever 11 0.4 13 0.5

These are diseases caused by infectious agents transmitted through direct contact with, and/or droplet spread of, the contagious secretions of an infected person, usually secretions from the respiratory tract.

Direct Contact & Respiratory and Vaccine Preventable Diseases Cases

(2016)

Rate per 100,000 population

(5-year mean)

Cases

(2016)

Rate per 100,000 population

(5-year mean)

Tuberculosis 301 10.6 282 10.2
Streptococcus pneumoniae, invasive 186 6.6 200 7.2
Streptococcal infections, Group A invasive 137 4.8 117 4.2
Legionellosis 30 1.1 44 1.6
Streptococcal infections, Group B neonatal 12 0.4 16 0.6
Meningococcal disease, invasive 5 0.2 7 0.2
Leprosy 2 0.1 2 <0.1

 

These are diseases caused by agents which can be spread a variety of ways, but for which there are effective vaccines readily available and routinely used.

Vaccine Preventable Diseases Cases

(2016)

Rate per 100,000 population

(2016)

 

Cases

(5-year mean)

Rate per 100,000 population

(5-year mean)

Influenza 3,135 10.6 2,375 85.7
Chickenpox 446 6.6 1,034 37.3
Pertussis 50 4.8 72 2.6
Mumps 10 1.1 7 0.2

These are diseases caused by infectious agents transmitted between animals and humans. Most transmission occurs through the bite of an arthropod (mosquito and tick), which introduces infectious agents into the bloodstream.

Vectorborne and Zoonotics Cases

(2016)

Rate per 100,000 population

(2016)

Cases

(5-year mean)

Rate per 100,000 population

(5-year mean)

Malaria 67 27.6 79 2.8
Lyme disease 23 23.5 30 1.1
West Nile Virus 22 15.2 30 1.1
Brucellosis 3 13.7 2 <0.1

 

Encephalitis and meningitis are illnesses caused by a variety of organisms which lead to inflammation of the brain and/or membranes surrounding the brain and spinal cord. Rare diseases are those that are observed infrequently in Toronto.

Other Reportable Diseases Cases

(2016)

Rate per 100,000 population

(2016)

Cases

(5-year mean)

Rate per 100,000 population

(5-year mean)

Human Prion Disease
Creutzfeldt-Jakob disease 1 0.0 3 0.1
Encephalitis/Meningitis
Encephalitis/Meningitis, viral 65 2.3 39 1.4
Encephalitis/Meningitis,  bacterial 19 0.7 20 0.7
Encephalitis/Meningitis,  unclassified 3 0.1 6 0.2
Encephalitis/ Meningitis: fungal 3 0.1 2 <0.1
Rare Diseases
Acute flaccid paralysis 1 <0.1 <0.1 <0.1