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. 2021 Apr 22;83(1):92–95. doi: 10.1016/j.jinf.2021.04.019

Table 2.

COVID-19 setting of transmission, by mask-wearing classification.

Mask-off (N =1882) Mask-on (N = 543) Overall (N = 3711)
Setting of transmission
 Households 1367 (72.6%) 1367 (36.8%)
 Social 515 (27.4%) 515 (13.9%)
 Health care 32 (5.9%) 32 (0.9%)
 Residential estates 49 (9.0%) 49 (1.3%)
 Residential care homes* 139 (25.6%) 139 (3.7%)
 Transportation 1 (0.2%) 1 (0.0%)
 Schools 6 (1.1%) 6 (0.2%)
 Workplaces 316 (58.2%) 316 (8.5%)
 Unknown - 1286 (34.7%)

Including residential care homes for the elderly and for the disabled, classified here as mask-on settings but we note the difficulty in maintaining compliance with mask use particularly among residents with disabilities or cognitive impairment.

Workplaces are classified here as mask-on settings, but some transmission may have occurred in break rooms where masks were not worn.