MEMO from Chief Medical Officer of Health – Change in the outbreak definition for Long-Term Care Home and Retirement Home settings – April 1 2021

General Information EMS Home Care Hospital Indigenous Health Long-Term Care Primary Care Public Health Retirement Home Other
Labs, Testing & Screening


  • Memo discusses that a revised Directive #3, expected to be released the week of April 5th  will see a change to the provincial definition of COVID-19 outbreaks in Long-Term Care Home (LTCH) and Retirement Home (RH) settings re: a suspect outbreak and a confirmed outbreak.


  • A suspect outbreak in LTCH: one single lab-confirmed COVID-19 case in a resident. A confirmed outbreak in LTCH: two or more lab-confirmed COVID-19 cases in residents/staff/visitors in a home with an epidemiological link, within 14 days, where at least one case could have reasonably acquired their infection in the home. 

DISCLAIMER: This document has been reviewed by Ontario Health West staff. While staff has provided its summary and interpretation of key action items, every health service provider remains responsible for ensuring their own understanding of the document and actions items, next steps and/or accountabilities outlined in the document.

Past Versions

No Past Versions