A 21-year-old college student presents to the clinic complaining of a sudden onset of chills and fever , muscle aches , headache , fatigue , sore throat , and painful nonproductive cough 3 days prior to fall final exams. Numerous friends of the patient in the dormitory reported similar symptoms and were given the diagnosis of influenza. He said that some of them were given a prescription for ribavirin.On examination , he appears ill with temperature 39.4°C ( 103 °F).His skin is warm to the touch , but no rashes are appreciated. The patient has mild cervical lymph node enlargement but otherwise has a normal examination. What is the most likely diagnosis? What is the biochemical mechanism of action of ribavirin? What is the genetic make up of this infectious organism?