Reportable Diseases

DISEASES OF PUBLIC HEALTH SIGNIFICANCE

Health Protection and Promotion Act ONTARIO REGULATION 135/18

Timely reporting of communicable diseases is essential for their control.

If you suspect or have confirmation of the following specified “Diseases of Public Health Significance”, or their “etiologic agents”, as per Ontario Regulation 135/18 under the Health Protection and Promotion Act, please report them to the local Medical Officer of Health.

TO REPORT:

Phone: 519-426-6170 or fax: 519-426-4767 (Monday to Friday 8:30 AM – 4:30 PM only)
For after-hours and holidays, phone: 1-877-298-5888 Public Health Inspector on-call

REPORT IMMEDIATELY (24/7)

Anthrax
Botulism
Brucellosis
Coronavirus disease 2019 (COVID-19)
Creutzfeldt-Jakob Disease, all types
Diphtheria
Gastroenteritis outbreaks in institutions and public hospitals
Group A Streptococcal disease, invasive
Haemophilus influenzae disease, all types, invasive
Hantavirus Pulmonary Syndrome
Hemorrhagic fevers, including:
- Ebola virus disease
- Marburg virus disease
- Lassa Fever
- Other viral causes
Hepatitis, viral
- Hepatitis A
Measles
Meningococcal disease, invasive
Plague
Poliomyelitis, acute
Q Fever
Rabies
Respiratory infection outbreaks in institutions and public hospitals
Diseases caused by a novel coronavirus, including Severe Acute Respiratory Syndrome (SARS), Middle East Respiratory Syndrome (MERS)
Smallpox and other orthopoxviruses, including monkeypox

REPORT BY THE NEXT WORKING DAY

Acquired Immunodeficiency Syndrome (AIDS)
Acute flaccid paralysis (AFP)
Amebiasis
Anaplasmosis
Babesiosis
Blastomycosis
Campylobacter enteritis
Carbapenemase-producing Enterobacteriaceae (CPE), infection or colonization
Chancroid
Chickenpox (Varicella)
Chlamydia trachomatis infections
Cholera
Clostridium difficile Infection (CDI) outbreaks in public hospitals
Cryptosporidiosis
Cyclosporiasis
Echinococcus Multiocularis infection
Encephalitis, including:
- Post-infectious
- Vaccine-related
- Subacute sclerosing panencephalitis
- Unspecified
- Primary, viral
Food poisoning, all causes
Giardiasis, except asymptomatic cases
Gonorrhea
Group B Streptococcal disease, neonatal
Hepatitis, viral
- Hepatitis B
- Hepatitis C
Influenza
Legionellosis
Leprosy
Listeriosis
Lyme Disease
Meningitis, acute
- viral
- other
- bacterial
Mumps
Ophthalmia neonatorum
Paralytic shellfish poisoning (PSP)
Paratyphoid Fever
Pertussis (Whooping Cough)
Pneumococcal disease, invasive
Powassan
Psittacosis/Ornithosis
Rubella
Rubella, congenital syndrome
Salmonellosis
Shigellosis
Syphilis
Tetanus
Trichinosis
Tuberculosis
Tularemia
Typhoid Fever
Verotoxin-producing E. coli infection including Haemolytic Uraemic Syndrome (HUS)
West Nile Virus Illness
Yersiniosis