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Contact tracing can be an important component of an epidemic response especially when the prevalence of infection is low. Such efforts are most effective where testing is rapid and widely available and when infections are relatively rare
From Contact-tracing apps are not a solution to the COVID-19 crisis:
So contact tracing doesn’t get you out of lockdown, but once you are out of lockdown, it can help the economy tick along so long as their is access to testing.
