-- Communicable Diseases List revised Friday February 17 2023

List of reportable diseases

Peel Public Health provides education and consultation to community members and health professionals regarding infectious diseases.

The diseases in the following lists must be reported to the Medical Officer of Health.

  • *Acquired Immunodeficiency Syndrome (AIDS)
  • Acute Flaccid Paralysis
  • Amebiasis
  • Amebiasis
  • Blastomycosis
  • Botulism
  • Brucellosis
  • Campylobacter enteritis
  • Carbapenemase-producing Enterobacteriaceae (CPE), infection or colonization
  • Chancroid
  • Chickenpox (Varicella)
  • Chlamydia trachomatis infections
  • Cholera
  • Clostridium difficile infection (CDI) outbreaks in public hospitals
  • Coronavirus, novel, including
    • Severe Acute Respiratory Syndrome (SARS)
    • Middle East Respiratory Syndrome (MERS)
    • Coronavirus disease (COVID-19)
  • Creutzfeldt-Jakob Disease, all types
  • Cryptosporidiosis
  • Cyclosporiasis
  • Diphtheria
  • Echinococcus multilocularis infection
  • E. coli (see Verotoxin producing E. coli)
  • Encephalitis, including:
    • Primary, viral
    • Post-infectious
    • Vaccine-related
    • Subacute sclerosing panencephalitis
    • Unspecified
  • Food poisoning, all causes
  • Gastroenteritis, outbreaks in institutions and public hospitals
  • Giardiasis, except asymptomatic cases
  • Gonorrhoea
  • Group A Streptococcal disease, invasive
  • Group B Streptococcal disease, neonatal
  • Haemophilus influenzae disease, all types, invasive
  • Hantavirus pulmonary syndrome
  • Hemorrhagic fevers, including:
    • Ebola virus disease
    • Marburg virus disease
    • Lassa fever
    • Other viral causes
  • Hepatitis A, viral
  • Hepatitis B, viral Hepatitis C, viral
  • Influenza
  • Legionellosis
  • Leprosy
  • Listeriosis
  • Lyme Disease
  • Measles
  • Meningitis, acute, including:
    • Bacterial
    • Viral
    • Other
  • Meningococcal disease, invasive
  • Mumps
  • Ophthalmia neonatorum
  • Paralytic Shellfish Poisoning
  • Paratyphoid Fever
  • Pertussis (Whooping Cough)
  • Plague
  • Pneumococcal disease, invasive
  • Poliomyelitis, acute
  • Psittacosis/Ornithosis
  • Q Fever
  • Rabies
  • Respiratory infection outbreaks in institutions and public hospitals
  • Rubella
  • Rubella, congenital syndrome Salmonellosis
  • Shigellosis
  • Smallpox and other Orthopoxviruses including Monkeypox
  • Syphilis Tetanus
  • Trichinosis
  • + Tuberculosis
  • Tularemia
  • Typhoid Fever
  • Verotoxin-producing E. coli infection, including Haemolytic Uraemic Syndrome (HUS)
  • West Nile Virus Illness
  • Yersiniosis

Diseases that are bold should be reported immediately to the Medical Officer of Health. Other diseases are to be reported by the next working day.

* Human Immunodeficiency Virus (HIV) infection is reportable to the Medical Officer of Health since it is the agent responsible for AIDS.

+ Latent tuberculosis infection (LTBI) is also reportable to the Medical Officer of Health.

Access printable versions:

Factsheets and additional information:

For additional information on communicable diseases in schools (including Fifth Disease and Scabies), refer to the School Health Reference Guide.

For more information, call Peel Public Health at 905-799-7700.

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