What is meant by specificity and sensitivity of a test?

The specificity of a test indicates how likely it is that someone who is actually not infected will also be identified as not infected. For example, with a specificity of 96%, 96 out of 100 people who take this test and are also actually not infected with the coronavirus will be tested as negative.

The sensitivity of a test indicates how likely it is that someone who is actually infected will also be recognized as infected. For example, with a sensitivity of 96%, 96 out of 100 people who take this test and are actually infected with the coronavirus will test as positive.