Review Question - QID 217063

A 54-year-old man presents to his primary care physician for an annual visit. He has no medical complaints but 3 days ago, he attended his grandson's birthday party where an attendee had chickenpox. His medical history includes hypertension, hyperlipidemia, and chronic lymphocytic leukemia. His medications consist of amlodipine and atorvastatin. He smokes 1 pack of cigarettes per day and has a 40-pack-year smoking history. He drinks alcohol socially and occasionally uses marijuana. His temperature is 98.6°F (37.0°C), blood pressure is 134/76 mmHg, pulse is 90/min, and respirations are 16/min. Physical exam reveals a well-appearing man in no acute distress. Heart and lung auscultation are normal. There are no skin rashes noted and his neurological exam is unremarkable. Varicella serology is negative. Which of the following is the most appropriate management?