Diseases Reportable to Public Health

Health professionals and public health work together to help prevent the spread of communicable diseases in our communities. O. Reg. 135/18: Designation of Diseases under the Health Protection and Promotion Act, outlines which communicable diseases are designated as diseases of public health significance in Ontario.

Report a disease to Huron Perth Public Health

To report a disease, call HPPH at 1-888-221-2133 ext 3254, Monday to Friday from 8:30AM to 4:30PM. If it is after hours, and the disease is one to be reported immediately, please call 1-800-431-2054.
Fax a follow-up report to 519-271-2195, or toll-free, 1-866-271-2195.
All other diseases should be reported by phone within one business day.

Diseases to report immediately

Report these diseases immediately, even if they are only considered to be “suspect cases”:

  • Anaplasmosis
  • Anthrax
  • Babesiosis
  • Botulism
  • Brucellosis
  • Chickenpox (Varicella), if hospitalized
  • Clostridium difficile infection, outbreaks in institutions and public hospitals
  • Cyclosporiasis
  • Diphtheria
  • E. coli (see Verotoxin-producing E. coli)
  • Food poisoning, all causes
  • 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, Lassa fever, Marburg disease and other viral causes
  • Hepatitis A, viral
  • Influenza, novel, not seasonal, lab confirmed
  • Legionellosis
  • Listeriosis
  • Measles
  • Meningitis, acute, including bacterial, viral and other causes
  • Meningococcal disease, invasive
  • Mumps
  • Novel Coronavirus, including Severe Acute Respiratory Syndrome (SARS-CoV) and Middle East Respiratory Syndrome (MERS-CoV)
  • Paralytic Shellfish Poisoning (PSP)
  • Pertussis (Whooping Cough)
  • Plague
  • Poliomyelitis, acute
  • Powassan
  • Rabies, human cases
  • Rabies, animal exposures (call 1-888-221-2133 and press zero; fax reports to 519-482-7820)
  • Respiratory infection outbreaks in institutions and public hospitals, including influenza
  • Rubella
  • Salmonellosis
  • Shigellosis
  • Smallpox and other Orthopoxviruses, including MPOX (formerly known as monkeypox)
  • Tuberculosis, active disease
  • Tularemia
  • Verotoxin-producing E. coli infection, including Haemolytic Ureamic Syndrome (HUS)

Diseases to report within one business day

Please report the following diseases to HPPH within one business day:

  • Acute Flaccid Paralysis
  • Amebiasis
  • Blastomycosis
  • Campylobacter enteritis
  • Carbapenemase-producing Enterobacteriaceae (CPE), infection or colonization
  • Chickenpox (Varicella), community cases
  • Chlamydia trachomatis infections
  • Cholera
  • Creutzfeldt-Jacob Disease, all types
  • Cryptosporidiosis
  • Echinococcus multilocularis infection
  • Encephalitis, including primary viral, post-infectious, vaccine related, sub-acute sclerosing panencephalitis and unspecified
  • Giardiasis, except asymptomatic cases
  • Gonorrhoea
  • Hepatitis B, viral
  • Influenza, seasonal, community cases
  • Leprosy
  • Lyme disease
  • Paratyphoid Fever
  • Pneumococcal disease, invasive (see streptococcal pneumoniae, invasive)
  • Psittacosis or Ornithosis
  • Q Fever
  • Rubella, congenital syndrome
  • Streptococcal pneumoniae, invasive
  • Tetanus
  • Trichinosis
  • Tuberculosis, latent infection (positive TB skin test)
  • Typhoid Fever
  • West Nile Virus illness
  • Yersiniosis

Report sexually transmitted and blood borne infections 

Please report sexually transmitted infections, designated as diseases of public health significance, to the HPPH Sexual Health team within one business day.

Fax 519-271-5368, or call:

Huron County | 1-888-221-2133 ext 2406

Perth County | 1-888-221-2133 ext 3779

 Sexually transmitted and blood borne infections

  • Chancroid
  • Chlamydia trachomatis infections
  • Gonorrhoea
  • Group B Streptococcal disease, neonatal
  • Hepatitis C, viral
  • Human Immunodeficiency Virus (HIV)/Acquired Immunodeficiency Syndrome (AIDS)
  • Opthalmia neonatorum
  • Syphilis

This information is also available in the Diseases of Public Health Significance list [PDF].