72 #covid19 cases linked to a spin studio; 2500 have been exposed & are being monitored; the indoor classes did not require masking, despite having limited capacity and 6 feet of distance. This outbreak (to me) suggests contributions of aerosols thespec.com/news/hamilton-…
2/ Remember that all layers are important; not wearing masks during indoor exercise classes is a big red flag.
And, crowds that are indoors doing exercise are certainly at higher risk of aerosol-based transmission.
Concerning as we head into winter & indoor activity increases
And, crowds that are indoors doing exercise are certainly at higher risk of aerosol-based transmission.
Concerning as we head into winter & indoor activity increases
3/ A reminder that aerosols don’t follow a 6 feet rule (this class is a great example of where 6 feet is unlikely sufficient- crowded indoors enclosed spaces).
Here is where we think ventilation could be very important in addition to other protections.
Here is where we think ventilation could be very important in addition to other protections.
4/ Again, it’s hard to know all the details of spread here; could spread have actually happened after the class with close face to face contact implicating droplets? It’s certainly possible.
Likely some contribution of both IMO.
Likely some contribution of both IMO.
5/ Either way, the reality is that ongoing transmission will likely happen despite our best efforts; but the key is driving it down consistently over time so that we don’t have large surges.
In this case, if masks had been used during this class, or if windows had been open...
In this case, if masks had been used during this class, or if windows had been open...
6/ ...we might have been able to prevent this large super spreading scenario. If we can stop enough of these, we can have a big impact on slowing down transmission.
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