List of Diseases of Public Health Significance (Reportable to Public Health)

Report the following suspected or confirmed diseases to the Medical Officer of Health by telephone or fax as soon as possible.

Diseases marked with an asterisk (*) require immediate Public Health follow up. (Health Protection and Promotion Act, O. Reg. 135/18, O. Reg. 569)

Download a printable list of Diseases of Public Health Significance (PDF, 1 page)

  • Acquired Immunodeficiency Syndrome (AIDS)
  • Acute Flaccid Paralysis (AFP)
  • Amebiasis
  • * Anthrax
  • Blastomycosis
  • *Botulism
  • *Brucellosis
  • Campylobacter enteritis
  • Carbapenamase-producing Enterobacteriaceae (CPE) (colonization or infection)
  • Chancroid
  • Chickenpox (Varicella)
  • Chlamydia trachomatis infections
  • Cholera
  • Clostridium difficile infection (CDI) outbreaks in public hospitals
  • *Creutzfeldt-Jakob Disease, all types
  • Cryptosporidiosis
  • Cyclosporiasis
  • *Diphtheria
  • Echinococcus multilocularis infection
  • 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
  • Gonorrhea
  • *Group A Streptococcal disease, invasive
  • Group B Streptococcal disease, neonatal
  • *Haemophilus influenzae disease (all types), invasive
  • *Hantavirus Pulmonary Syndrome
  • *Hemorrhagic fevers:
    • *Ebola virus disease
    • *Lassa fever
    • *Marburg disease
    • *Other viral causes
  • Hepatitis, viral
    • * i. Hepatitis A
    • Hepatitis B
    • Hepatitis C
  • *Influenza (Novel, non-seasonal)
  • *Legionellosis
  • Leprosy
  • *Listeriosis
  • Lyme Disease
  • *Measles
  • *Meningitis, acute
    • *Bacterial
    • Viral
    • Other
  • *Meningococcal disease, invasive
  • Mumps
  • Ophthalmia neonatorum
  • Paralytic Shellfish Poisoning (PSP)
  • Paratyphoid Fever
  • Pertussis (Whooping Cough)
  • *Plague (Yersinia pestis)
  • Pneumococcal disease (Streptococcus pneumoniae), invasive
  • *Poliomyelitis, acute
  • Psittacosis/Ornithosis
  • *Q Fever
  • *Rabies
  • *Respiratory infection outbreaks in institutions and public hospitals
  • Rubella
  • Rubella, congenital syndrome
  • Salmonellosis
  • *Severe Acute Respiratory Syndrome (SARS)
  • Shigellosis
  • *Smallpox
  • Syphilis
  • Tetanus
  • Trichinosis
  • *Tuberculosis, active cases (also report positive skin tests in mm)
  • *Tularemia
  • Typhoid Fever
  • *Verotoxin-producing E. coli infection indicator conditions, incl. Haemolytic Uraemic Syndrome (HUS)
  • West Nile Virus illness
  • Yersiniosis

To report diseases

Telephone: Monday – Friday, 8:30 a.m.-4:30 p.m.: 1-800-265-7293, ext. 4752

  • After hours and holidays, 1-877-884-8653

Fax: 1-855-934-5463 (1-855-WDGLINE)