This is the absolute best data yet. Throw everything else out…. Iceland has the best genetic testing system in the world . (for instance 98% of the population. Has had their full genome sequenced!! ( BTW. deCODE Inc. a private CO. sold these genetic results to Roche! imagine that...one whole countries genetics owned by a private co. but i digress)..
In completely random sample testing of 10% of their total population: The infection rate is 50% with most having no symptoms. But they ARE shedding infectious virus!
https://www.dailymail.co.uk/news/article-8210401/Iceland-finds-half-population-asymptomatic-infected-Covid-19.html
This is exactly why its going to be so hard to use screening and isolation to flatten the curve. just too many occult infections.