What is the name of the stick used to indicate immunity from diphtheria?

The stick used to indicate immunity from diphtheria is known as the Schick test. This involves the use of a small amount of diphtheria toxin, which is injected intradermally to assess whether an individual has immunity against the bacterium that causes diphtheria. If the individual is immune, there will be no reaction at the injection site; otherwise, redness and swelling will indicate a positive reaction, signifying that the person does not have immunity and is susceptible to diphtheria.

The Schick test is significant in public health as it helps determine the need for vaccination against diphtheria. It was historically used to identify individuals who should receive the diphtheria vaccine or boosters. Understanding this concept is crucial for medical assistants, as they often play a role in patient education and vaccination programs.