Contact Tracing is not recommended (and basically pointless) for mild respiratory illnesses like Coronaviruses because for the vast majority of people, they are

Contact Tracing is not recommended (and basically pointless) for mild respiratory illnesses like Coronaviruses because for the vast majority of people, they are asymptomatic or lowly symptomatic, and the spread can be extensive. Its only recommended for more serious viruses like Ebola.