This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
Positive schick's test indicates that the person is ? 
Select and explain. 
A. Immune to diphtheria, B. Hypersensitive to diphtheria, C. Susceptible to diphtheria, D. Susceptible and hypersensitive to diphtheria
C: Susceptible to diphtheria
Answer: C: Susceptible to diphtheria 
Explanation: 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.