This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable diseases, Subject name: Social & Preventive Medicine
[{'content': 'A person has received a complete immunization against tetanus 10 years ago. Now he presents with a clean wound without any lacerations from an injury sustained 2.5 hours ago. He should now be given - \nSelect and explain. \nA. Full conurse of tetanus toxoid, B. Single dose of tetanus toxoid, C. Human tet globulin, D. Human tet globulin and single dose of toxoid', 'role': 'user'}, {'content': 'Answer: B \nExplanation: <p> Single dose of tetanus toxoid. In this question ,a person has received complete immunisation against tetanus 10 years ago. Now he is in immunity category B Now, he present with a clean wound without any lacerations Thus he should now be given single dose of tetanus toxoid. Reference:Park&;s textbook of preventive and social medicine,K.Park,23rd edition,page no:312-314. <\\p>', 'role': 'assistant'}]