Toronto Public Health (TPH) works with health care professionals to manage outbreaks, and apply effective public health strategies to prevent the transmission of infectious diseases.

For case and outbreak definitions, please refer to the Ontario Public Health Standards.

Please subscribe to TPH’s Communiqué e-newsletter to receive regular updates.

Reporting a Respiratory Outbreak

To report a suspected or confirmed respiratory outbreak:

During Business Hours (weekdays 8:30 a.m. to 4:30 p.m.):

  • Contact your Communicable Disease Liaison Unit (CDLU) Liaison directly or the CDLU General Line: 416-338-2100 or CDLU@toronto.ca

After Hours (weekdays after 4:30 p.m., weekends and statutory holidays):

  • Call 3-1-1 or 416-392-CITY (2489) and ask to speak with the Communicable Disease Control (CDC) Manager on-call

Managing a Respiratory Outbreak

Specimen Collecting/Testing

Signage

Influenza

COVID-19

Reporting an Enteric (Gastroenteritis) Outbreak

To report a suspected or confirmed enteric outbreak:

During Business Hours (weekdays 8:30 a.m. to 4:30 p.m.):

  • Contact your Communicable Disease Liaison Unit (CDLU) Liaison directly or the CDLU General Line: 416-338-2100 or CDLU@toronto.ca

After Hours (weekdays after 4:30 p.m., weekends and statutory holidays):

  • Call 3-1-1 or 416-392-CITY (2489) and ask to speak with the Communicable Disease Control (CDC) Manager on-call

Managing an Enteric (Gastroenteritis) Outbreak

Specimen Collecting/Testing

Signage

Norovirus

C-Difficile

CPE

For additional resources, please contact your Communicable Disease Liaison Unit (CDLU) Liaison directly or the CDLU General Line at CDLU@toronto.ca.