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Virus in brief: Tests exposed as imperfect, and more to know today about COVID-19
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Virus in brief: Tests exposed as imperfect, and more to know today about COVID-19

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Ohio Gov. Mike DeWine's positive-then-negative test results for the coronavirus are a reminder that no test is definitive.

The governor tested positive using a rapid test Thursday, before testing negative later in the day using a more sensitive laboratory-developed test. He was tested because he was going to meet with President Donald Trump during his visit to the state.

No test for coronavirus infection is perfect, and test results can be affected by a variety of factors, including the type of test used, the quality of the sample and when it was taken during the course of any infection.

Here's a look at the types of tests currently used to diagnose COVID-19:

Meanwhile, recommendations to contain the virus met varying responses this week. Delta permanently ditched at least 100 passengers for not wearing masks, while at the massive Sturgis, S.D. motorcycle rally, attendees appeared far more likely to have a helmet than a mask.

Also, further efforts to relieve economic stress bogged in Washington, D.C., and experts predict many more deaths next year. Watch this report:

Virus guide: Tips for going back to school, real or virtual

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