<prompt> Positive schicks test indicates that the person is ?Immune to diphtheriaHypersensitive to diphtheriaSusceptible to diphtheriaSusceptible and hypersensitive to diphtheria  <response>: Ans. is c i.e., Susceptible to diphtheria o Shick test is no longer in use. It was used for the susceptibility of for diphtheria. o It was an intradermal test, in which after intradermal injections of diphtheria toxin in one forearm usually left and toxoid in other forearm two readings were taken one at 24-48 hrs and second at 5-7 days. 