<blockquote class="twitter-tweet"><p lang="en" dir="ltr">55 cases out of 81 people attending exercise classes at a gym, despite 6-ft distancing and some mask use. Ventilation was not assessed. <a href="https://t.co/cc3QrlFeCb">https://t.co/cc3QrlFeCb</a></p>— Linsey Marr (@linseymarr) <a href="https://twitter.com/linseymarr/status/1364661446995542016?ref_src=twsrc%5Etfw">February 24, 2021</a></blockquote> <script async src="https://platform.twitter.com/widgets.js" charset="utf-8"></script>
COVID-19 Outbreak Among Attendees of an Exercise Facility — Chicago, Illinois, August–September 2020
Summary
What is already known about this topic?
Increased respiratory exertion facilitates SARS-CoV-2 transmission; outbreaks linked to indoor activities have been reported.
What is added by this report?
In August 2020, 55 COVID-19 cases were identified among 81 attendees of indoor high-intensity classes at a Chicago exercise facility. Twenty-two (40%) persons with COVID-19 attended on or after the day symptoms began. Most attendees (76%) wore masks infrequently, including persons with (84%) and without COVID-19 (60%).
What are the implications for public health practice?
To reduce SARS-CoV-2 transmission in fitness facilities, attendees should wear a mask, including during high-intensity activities when ≥6 ft apart. In addition, facilities should enforce physical distancing, improve ventilation, and encourage attendees to isolate after symptom onset or receiving a positive SARS-CoV-2 test result and to quarantine after a potential exposure to SARS-CoV-2 and while awaiting test results. Exercising outdoors or virtually could further reduce SARS-CoV-2 transmission risk.
https://www.cdc.gov/mmwr/volumes/70/wr/mm7009e2.htm?s_cid=mm7009e2_e
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