system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 61-year-old woman comes to the physician because of a 5-day history of fever, headache, coughing, and thick nasal discharge. She had a sore throat and nasal congestion the week before that had initially improved. Her temperature is 38.1°C (100.6°F). Physical exam shows purulent nasal drainage and tenderness to percussion over the frontal sinuses. The nasal turbinates are erythematous and mildly swollen. Which of the following describes the microbiological properties of the most likely causal organism?
assistant
Gram-positive, optochin-sensitive, lancet-shaped diplococci