South Korea is a good model to follow but they were well-prepared, so it's not simple to copy. How they could test so early: https://threadreaderapp.com/thread

South Korea is a good model to follow but they were well-prepared, so it's not simple to copy. How they could test so early: https://threadreaderapp.com/thread/1237058531410489345.html https://threadreaderapp.com/thread/1237058531410489345.html How they can test so many: https://threadreaderapp.com/thread/1238890311272796160.html https://threadreaderapp.com/thread/1238890311272796160.html