Contact tracing cannot reduce transmission of Covid-19 if a person is not tested within three days

[السياسي]

Researchers from the University of Utrecht in the Netherlands said the reproduction R rate can be kept under one as long as only two in 10 patients slip under the radar.

https://www.dailymail.co.uk/news/article-8530673/Contact-tracing-reduce-transmission-Covid-19-person-not-tested-three-days.html?ns_mchannel=rss&ito=1490&ns_campaign=1490 ]قرااء المزيد ..... [/url]