Table 1:

Description of outbreaks of SARS-CoV-2 infection and related deaths in retirement homes in Ontario

Characteristic	No. (%)* of homes with outbreaks of SARS-CoV-2 infection
By retirement home	n = 770
≥ 1 outbreaks	273 (35.5)
Total outbreaks	n = 367
No. of outbreaks involving both residents and staff	148 (40.3)
No. of outbreaks involving residents only	75 (20.4)
No. of outbreaks involving staff only	144 (39.2)
Median no. of cases per facility with a resident infection (IQR)	4 (1–15)
No. of homes with ≥ 1 COVID-19 deaths, n	87
Median proportion of residents who died per facility with a resident death, % (IQR)	2.9 (1.5–7.6)
Median no. of deaths per facility with 1 or more deaths (IQR)	3 (1–4)
By SARS-CoV-2 infection	n = 3045
No. of staff infections	1101 (36.2)
No. of resident infections	1944 (63.8)
Cumulative incidence of COVID-19 resident cases (per thousand RH residents)	34.4
Median proportion of residents infected per facility with a resident infection, % (IQR)	4.9 (1.8–19.7)
No. of deaths from COVID-19	336
COVID-19 death rate (per thousand RH residents)	5.9
Case fatality rate, %	17.3

Note: IQR = interquartile range, RH = retirement home.

^*Unless otherwise specified.