An heаlthy 58-yeаr-оld pаtient presents tо the оffice with a cough, sore throat, and fevers for the past five days. She reports feeling fatigued and experiencing occasional headaches. She has not traveled recently, denies sick contacts, has not taken any medications for her symptoms, and has been resting at home. Upon further questioning, she mentions that her symptoms started gradually and have been worsening over the past few days. On physical examination, her temperature is 38.5°C (101.3°F), heart rate is 82 beats/minute, respiratory rate is 18 breaths/minute, and blood pressure is 120/80 mmHg. Auscultation of the lungs reveals bilateral crackles at the bases. There is mild erythema of the oropharynx with no exudate or tonsillar enlargement. The remainder of the examination is unremarkable. Which of the following clinical details would lead to treatment with an antibiotic?