Tracing contacts for those who test positive and asking contacts to self-quarantine for 14 days.

追踪检测呈阳性人员的接触者，并求接触者自我隔离14天。

But 20 to even 30% of people who test positive for Covid-19 do.

但是Covid-19测试阳性的人 有20%甚至30％。

The good news is America's daily number of positive coronavirus tests has continued to decrease.

好消息是，美国每天冠状病毒的阳性病例数量在持续减少。

Has anyone involved in these games tested positive yet?

动员中目前有检测出阳性的吗？

Djokovic is the fourth player from the series to be test positive for the virus.

德约科维奇是参与这些比赛的动员中第四位病毒检测呈阳性的选手。

You should eat hot yang foods, like beef.

你应当吃含阳性较高的食品，像牛肉。

So there could be some harmless false positives in the data.

因此，数据中可能存在一些无害的假阳性。

The results might be different for HIV-positive people.

艾滋病阳性患者的研究结果可能不同。

That's a recipe for countless false positives and dead ends-years of frustration, for now forestalled.

这就是无数假阳性和死胡同的秘诀——多年的失望，现在该先发制人了。

Tariq, his wife and daughter are HIV positive, and a relative tested positive this month.

塔里克、他的妻子和女儿都是HIV阳性，他的一个亲戚这个月的检测结果也是阳性。

Anyone who has been near the positive person gets an alert.

任何接近检测呈阳性的人都会收到警告。

AI also helped reduce the number of false positive results.

人工智能还有助于减少假阳性结果的数量。

However, he went into quarantine this week after being around a person who tested positive.

然本周，在接触过一位检测结果呈阳性的人后，他开始进行隔离。

If the lymphoma has CD20-positive B-cells, Rituximab can also be used.

如果淋巴瘤有CD20阳性的B细胞，也可以使用利妥昔单抗。

Sharapova tested positive for a drug that she says she took for medical reasons.

莎拉波娃说她兴奋剂检测呈阳性的原因是她服用了药物。

Since early 2020, the United States has seen the most positive tests overall.

自2020年初以来，美国的检测结果总体呈阳性的情况最多。

This doesn't happen with urease negative Gram-positive cocci, like Streptococcus pneumoniae or Enterococcus faecalis.

这一现象在脲酶阴性的革兰氏阳性细菌中就不会发生，如肺炎链球菌或粪肠球菌。

A large percentage of those who test positive for COVID have no symptoms.

大部分新冠肺炎检测呈阳性的人没有任何症状。

So you do this for 5 days after symptoms start and a positive test.

在症状出现并检测呈阳性后的五天你都如此。

Masculine means related to the male sex.

阳性的意思是与男性有关。