This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Infectious Disease Epidemiology, Subject name: Social & Preventive Medicine
[{'content': 'Carriers not seen in - \nSelect and explain. \nA. Rabies, B. Typhoid fever, C. Polio, D. Malaria', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Rabies Incubatory carrierConvalescent carrierHealthy carrierChronic carriero Measleso Mumpso Polioo Pertusiso Influenzao Diphtheriao Hepatitis Bo Typhoid fevero Dysentery (bacillary and amebic)o Cholerao Diphtheriao Whooping cougho Poliomyelitiso Cholerao Meningoccal meningitiso Salmonellao Diphtheriao Typhoid fevero Hepatitis Bo Dysenteryo Cerebrospinal meningitiso Malariao Gonorrheao Diphtheria", 'role': 'assistant'}]