Question: A 65-year-old college professor from upstate New York with a medical history of diabetes and hypertension presents with a non-productive cough and sore throat for 3 days, which has affected his work. He lives on a horse farm. He denies any headache, chest pain, or shortness of breath. He is sexually active with his wife only. He is up to date with the vaccinations, including the flu shot 8 months ago. His vitals are blood pressure 140/85 mm Hg and temperature 99 °F (37.2 °C). The chest x-ray reveals diffuse patchy infiltrates in the interstitium. Rapid influenza tests are negative. Blood is sent for investigation. What would be the most appropriate next step in his treatment? Need Assignment Help? A. Oral amoxicillin-clavulanic acid B. IM ceftriaxone C. Oseltamivir D. Oral azithromycin