This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
[{'content': 'Window period in HIV is from - \nSelect and explain. \nA. Infection to appearance of antibodies in serum, B. Infection to appearance ofviral paicles in blood, C. Infection to appearance of symptoms, D. Infection to decrease of CD4 lymphocytes', 'role': 'user'}, {'content': "Answer: A \nExplanation: It may takr 2-8 weeks to months for antibodies to appeae after infection and during pa of this periof the individual may be highly infectiousThis seronegative infective stage is known as tbe window period. REF:ANANTHANARAYAN AND PANIKER'S TEXTBOOK OF MICROBIOLOGY 9TH EDITION PAGE NO-579", 'role': 'assistant'}]