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: Microbiology
[{'content': 'Carriers for Herpes simplex virus is: March 2009 \nSelect and explain. \nA. Man, B. Monkey, C. Both, D. None', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A: Man Humans are the only natural hosts and the sources of infection are saliva, skin lesions or respiratory secretions. Asymptomatic carriers form the more impoant source of infection, especially in genital infection.', 'role': 'assistant'}]