Outbreak Resources

Respiratory and gastroenteritis outbreaks in institutions are reportable to the Medical Officer of Health as stated in Ontario Regulation 559/91 under the Health Protection and Promotion Act.

To report a suspect or confirmed outbreak to the Middlesex-London Health Unit, please call 519-663-5317 from 8:30 a.m. to 4:30 p.m. Monday to Friday and 519-663-5317 (option 2) after hours and on weekends and holidays.

Recommendations for Outbreak Prevention and Control in Institutions and Congregate Living Settings, 2025 

Child Care Centre Outbreaks

• Child Care Centre Illness Tracking Line List (PDF)

Outbreak Signs

• Outbreak Sign (PDF)
• Wash Your Hands Sign (PDF)

Outbreaks Management Resources 

• Recommendations for Outbreak Prevention and Control in Institutions and Congregate Living Settings, 2025  (see section "Reference documents")
• MLHU High-Level Summary of Outbreak Control Measures for LTCHs, RHs, CLSs
• MLHU Management of Symptomatic Residents
• Respiratory Outbreaks:
• Respiratory Infection Outbreaks in Institutions and Public Hospitals - Appendix 1 (see section "R" under Infectious Disease Protocol)
• Influenza for Healthcare Providers
• PHO Test Information Index - Respiratory Viruses (including influenza)
• Respiratory Line List 
• Gastroenteritis Outbreaks: 
• Gastroenteritis, Outbreaks in Institutions and Public Hospitals - Appendix 1 (see section "G" under Infectious Disease Protocol)
• PHO Test Information Index - Gastroenteritis - Stool Viruses 
• PHO Enteric Kit Ordering and Instructions 
• Gastroenteric Line List

Outbreak Control Measures

• Respiratory Outbreak Control Measures For Long-Term Care Homes and Retirement Homes
• Enteric Outbreak Control Measures for Long-Term Care Homes, Retirement Homes, and Acute Care

Clostridium difficile Outbreaks

• Clostridium difficile Infection: Infection Prevention and Control Guidance for Management in Acute Care Settings - Public Health Agency of Canada
• Provincial Infectious Diseases Advisory Committee (PIDAC) Annex C: Testing, Surveillance and Management of Clostridium difficile in all health care settings. 2013

Best Practices Documents

• PHO's Best Practice Documents for Routine Practices and Additional Precautions