Every article I see about people testing asymptomatic is followed by comments insisting they were asymptomatic when tested , with no idea of whether they stayed asymptomatic or whether virtually all of them had symptoms a few days later, thus basically invalid. But this doesn't seem like a hard problem to solve, folks . Is nobody bothering to follow up with the asymptomatic people a week later? Just take their mobile…
> Just take their mobile phone number, and text them en masse with a quick Y/N question as to whether or not they got sick? I've been wondering why this isn't just being done for everyone in the country, every few days? "The main symptoms of COVID-19 are X, Y, Z. If you think you may have COVID-19 please respond "Yes" to this text message. This is free. Your response is private and used to understand the spread of CO…
https://covidtracking.com/blog/weve-launched-a-new-state-gra...
> We're rolling out a new, more rigorous system for grading the public health data each state reports.