Superspreading Event at Choir Practice in Catalonia
Looks like just about every risk factor was present in the setting:
- a lot of people
- close together
- indoors
- poor ventilation
- long duration
- singing
The Public Health Agency assumes that the contagion took place during
the general rehearsal that the choir did on Friday, September 11 in a
place of La Fàbrica while preparing the concert that took place the
following Sunday during the Festa Major of Sallent.
An exposure
of more than 15 minutes, in a room with closed windows, with
insufficient physical distance, with working air conditioning, which
favors the suspension of particles by aerosol in a closed cycle, and the
fact that many of the singers do not they wore masks, it potentiated
the almost general contagion in an environment where it was sung, they
have claimed.
Choir members have explained that they closed
the windows because there was a plague of boxwood butterflies outside,
and that once closed, they turned on the air conditioning.
Video of the event:
This is the ninth choir superspreading event in the database.