Long-term care facilities (LTCFs), retirement homes (RHs), and other congregate care settings in Canada and worldwide have experienced significant COVID-19 outbreaks As a health system response, our acute care hospital in Toronto, Ontario, Canada, developed and mobilized an onsite Infection Prevention and Control (IPAC) SWAT team (IPAC-SWAT) to regional settings on outbreak and implemented a strategy of support through education, training, and engagement Between April 28 , 2020, and June 30 , 2020, IPAC-SWAT assessed 7 LTCFs and 10 RHs for IPAC preparedness and actively managed 10 of 13 COVID-19 outbreaks (LTCF n=5; RH n=5) IPAC-SWAT strategies were multi-interventional and intended to mitigate further viral transmission or prevent outbreaks Dedicated training of local “ IPAC champions ” was facilitated at 7 sites (LTCF = 5; RH = 2) using a “ train-the-trainer ” approach to promote local knowledge, autonomy, and site-led audits and feedback