A 12-year-old girl is brought to the physician for a 2-day history of sore throat and dry cough. Temperature is 37.4 C (99.3 F). Physical examination shows no tonsillar exudates or lymphadenopathy. Which of the following is the next best step in management?
Antibiotic therapy
Antiviral therapy
Rapid Strep test
Sputum culture
Throat culture
Viscous lidocaine gargle