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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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A homeless 45-year-old man presents to the emergency room in December complaining of malaise, body aches, chills, and fever. He reports that his symptoms started 4 days ago. His myalgias and chills have begun to resolve, but now he is starting to develop a dry cough, dyspnea, and a sore throat. He does not have a primary care provider and has not had any vaccinations in over 2 decades. He receives medical care from the emergency room whenever he is feeling ill. His temperature is 103°F (39.4°C), blood pressure is 130/70 mmHg, pulse is 115/min, and respirations are 22/min. On exam, he appears fatigued with mildly increased work of breathing. A chest radiograph is negative. A nasopharyngeal viral culture is positive for an orthomyxovirus. Upon further review of the patient’s medical record, he was diagnosed with the same condition 1 year ago in November. Which of the following mechanisms is responsible for pandemics of this patient’s disease?
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Reassortment