This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteriology, Subject name: Microbiology
[{'content': 'Regarding Shick&;s test which of the following is false \nSelect and explain. \nA. Erythematous reaction in both arms indicate hypersensitivity, B. Positive test means that person is immune to diphtheria, C. Diphtheria antitoxin is given intradermally, D. Test done to find out immune status against diphteria', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Schick test: intradermal test to demonstrate circulating diphtheria antitoxin. This antitoxin may be present either due to previous infection or immunization. This test demonstrates the immunity or susceptibility of a person against diphtheria. Positive Schick test signifies that the person is susceptible to diphtheria due to the absence or lack of adequate amount of circulating antitoxin. Reference: Baveja Textbook of Microbiology; 4th edition; Page no: 219, 220', 'role': 'assistant'}]