3 ms·

The tests have an approx 20% false negative rate. You test someone who has symptoms. The test returns negative. What do you tell them to do, given that you kno

• colonelcanoe 7y ago
  You tell them the same thing regardless of the outcome of the test. The 80% of the time it returns positive, you tell the epidemiologist, and they prevent a few further infections by investigating close personal contacts.