Table 4.

Results of environmental monitoring of SARS-CoV-2 in the DEA Department in April 2021.

Sampling site	Sampling method	PCR	PCR positivity cycle	PCR challenge test
Patients bed side table	Wipe	positive	26.4	positive (37.3)
patients dining table	Wipe	positive	37.6	negative
patients service table	Wipe	positive	38.2	negative
table away from patients	Wipe	negative	>40	negative
Close air (<50 cm) at patients at 1.5 m of height	bubbler sampling	positive	25.2	positive (35.1)
Far air (>2 m) at patients at 1.5 m of height	bubbler sampling	positive	36.6	negative
Distant air (>2 m) at a height of 2.5 m near the air intake vent	bubbler sampling	negative	>40	negative

NT, not tested.

Notes: Boundary conditions on the day of sampling 21-04-2021.

- Positive patients present in the ward: 13.

- Positive patients present in the room where the samples were taken: 7.

- Volume of the room: 165 m³

- Air volume per patient: 24 m³

- Indoor thermohygrometric conditions: T 22.8 °C - R.H. 49.8%.

- No mechanical ventilation.

- Natural ventilation estimated at 0.5 vol/h.