Table 1.

Swabs taken at different areas of the Infectious Disease ward at the Uppsala University Hospital, Sweden

Area	Negative	Positive	Positive in one gene	Total swabs
Medical staff area	68.2%	13.6%	18.2%	22
Floor	25.0%	37.5%	37.5%	8
Computer	83.3%	0.0%	16.7%	6
Door handle	100.0%	0.0%	0.0%	8
Patient area	58.8%	22.7%	18.5%	119
Bed	66.7%	33.3%	0.0%	3
Floor	43.5%	30.4%	26.1%	46
Ventilation	56.0%	24.0%	20.0%	50
Air	100.0%	0.0%	0.0%	10
Bathroom	100.0%	0.0%	0.0%	7
Door handle	100.0%	0.0%	0.0%	3
Protective gear	60.0%	40.0%	0.0%	5
Shoes	52.5%	25.0%	22.5%	40
Ventilation	35.7%	57.1%	7.1%	14
Grand total	57.0%	25.0%	18.0%	200

The number of swabs taken at different areas of the ward and the percentage of negative and positive (positive for both or one of the genes) swabs by RT-qPCRs targeting portions of the SARS-CoV-2 envelope small membrane protein and nucleocapsid genes. For areas with swabs taken in different subareas, the subcategories are given. The swabs were collected at the Infectious Disease ward at the Uppsala University Hospital, Sweden between early April and mid-May 2020