A patient has fever, difficulty breathing, chest pains, fluid in the alveoli, and a positive tuberculin skin test. Gram- positive cocci are isolated from the sputum. The patient most likely has

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The presence of fever, difficulty breathing, chest pains, fluid in the alveoli, and the isolation of Gram-positive cocci from the sputum are indicative of pneumococcal pneumonia. Tuberculosis is suggested by the positive tuberculin skin test, but the isolation of Gram-positive cocci points more directly to a bacterial pneumonia caused by Streptococcus pneumoniae, which is the most common cause of bacterial pneumonia.

A Patient Has Fever, Difficulty Breathing, Chest Pains, Fluid in the Alveoli