https://www.nytimes.com/2020/06/27/world/europe/coronavirus-spread-asymptomatic.html?action=click&module=RelatedLinks&pgtype=Article This article if correct is very discouraging. News of presymptomatic spread played down to avoid discouraging contact tracing – if this is true, tail wagging the dog and much lost time/misplaced effort.
We should be trying to get contact tracing infrastructure in place because it will help around the margins and will stop some individual transmissions.We MUST stop thinking of it as a magic bullet (which it has been arguably nowhere, at most in a few very low-incidence settings)
And start thinking of other novel (and humdrum, like masks) ways to slow this virus and keep it away from the most vulnerable. So much effort toward contact tracing has diverted effort and creativity from other solutions.