Research from the Centers for Disease Control and Prevention indicates most people who have COVID-19 can expect to see a positive result for five to nine days. But some people continue to get positive test results for even longer than that, and it's especially hard to know what to do in those circumstances. 不过好像说10天后即使positive也没啥传染性了
rapid10天左右吧
不过好像说10天后即使positive也没啥传染性了
我认识的夫妻29天转阴 然后又阳了