Probably one of the best papers on the topic: https://www.nature.com/articles/s41586-020-2923-3 https://www.nature.com/articles/s41586-020-2923-3 You will not

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