A person with a wristwatch is writing in a notebook with a pen while using a laptop on a wooden table. A smartphone and a saucer with a teacup are also on the table, possibly addressing cyberthreats in their work. The scene suggests a casual work or study environment.

Measuring the Accuracy of PCR Tests Can Improve Health Care Beyond COVID-19

Many of us have taken a COVID-19 test. But, have you ever wondered, after your sample goes off to a lab, exactly how they arrive at a positive or negative result?

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