1/
A study on air and environmental samples tested for #COVID19 via PCR on hospital wards and ICU settings:

Positive tests on:
-computer mice: ICU 6 of 8, ward 1 of 5
-trash cans: ICU 3/5, ward 0/8
-bed handrails: ICU 6/14, ward 0/12
-doorknobs GW 1/12

https://bit.ly/2xlmRkb 

2/

1. "... the virus can be tracked all over the floor, as indicated by the 100% rate of positivity from the floor in the pharmacy, where there were no patients."

2. "half of the samples from the soles of the ICU medical staff shoes tested positive."

3/

Air samples tested:

-In ICU, positive test results in "14 samples positive of 40 samples tested

-2 samples positive of 16 samples tested on hospital wards

[important limitations below]

4/

Limitations:

1. "the results of the nucleic acid test do not indicate the amount of viable virus"

2. "for the unknown minimal infectious dose, the aerosol transmission distance cannot be strictly determined"

5/

Take home points:

1. This data is revealing but not sufficient to change current PPE recommendations

2. Wash your hands

3. Do people have hospital shoes and non-hospital shoes? I do.