200
Participants
Start Date
July 19, 2021
Primary Completion Date
February 28, 2022
Study Completion Date
February 28, 2022
No mask
The participant is asked to wear no mask for 10 minutes.
Filtering face mask 2 (FFP2)
The participant is asked to wear a FFP2 mask for 1 hour during work.
Filtering face mask 3 (FFP3)
The participant is asked to wear a FFP3 mask for 1 hour during work.
Medical University of Vienna, Vienna
Medical University of Vienna
OTHER