Thread by @DrEricDing

WORRISOME OUTBREAK—this one Canadian gym did almost everything right—6 feet apart, symptom screenings, cleaning, 50% capacity, masks before and after class. But no air ventilation improvement. Now an outbreak of 61 primary and secondary #COVID19 cases. 🧵
cnn.com/2020/10/13/wor…

2) the gym also tracked all those in attendance at each class, masking before and after classes, laundering towels and cleaning the rooms within 30 minutes of a complete class, said Dr. Elizabeth Richardson, Hamilton's medical officer of health.
But it still wasn't enough.

3) “Public health officials are very concerned about the number of cases and the size of the outbreak, especially because the city is not currently a hotspot and the facility was not ignoring health protocols, they said in a statement to CNN.

4) “"They have also supported public health services in our investigation by sharing the messaging with all their members”

There are currently 44 confirmed positive primary cases and 17 confirmed secondary cases. Exposure was linked to several classes September 28 to October 4.

5) “public health officials told them "patient zero displayed no symptoms."
In a post to clients on Instagram, SPINCO exclaimed in frustration, "We took all the measures public health offered, even added a few, and still the pandemic struck us again!'"

6) “SPINCO said it will stay closed pending further investigation.
City officials say SPINCO was operating at 50% capacity, with a 6-foot radius around each bike, and that this might raise questions about the safety of gyms and fitness studios during the pandemic.

7) Bottomline—an asymptomatic case slipped in, and during an unmask indoor gym class, with no ventilation improvement, triggered an epidemic.

This again proves that, *6 FEET RULE IS NOT ENOUGH INDOORS* for #COVID19 airborne transmission risk.