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I was searching for research around the infection risk associated with various activities (outdoor vs indoor dining / gyms etc). Was hoping to see arguments motivated by contact-tracing data. Wasn't able to find much. Did anyone else have better luck?

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These may help for that:

- https://docs.google.com/document/d/1fB5pysccOHvxphpTmCG_TGdy...

- https://www.microcovid.org/

Probably one of the best papers on the topic: https://www.nature.com/articles/s41586-020-2923-3

You will not find much if any based on contact tracing data. Typical participation in CT isn’t remotely close to “I ate at x restaurant on y day”, and the entities tasked with CT are often inadequately equipped to handle the volumes/technical capacity of such a task.

There is, however, a wealth of literature using cell phone mobility, such as shown above.

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