> Is there still evidence for this type of contact tracing? I'm not sure what you mean by "this type". What you've quoted is how contact tracing works. It does

> Is there still evidence for this type of contact tracing? I'm not sure what you mean by "this type". What you've quoted is how contact tracing works. It does work, see for example https://www.nature.com/articles/d41586-020-03518-4 https://www.nature.com/articles/d41586-020-03518-4