A 55yo man has a chronic cough and sputum, night sweats and weight loss. What is the single
most likely causative organism?
a. Coagulase +ve cocci in sputum
b. Gram -ve diplococci in sputum
c. Gram +ve diplococci in sputum
d. Pneumocystis carinii in sputum
e. Sputum staining for mycobacterium tuberculosis
answer: E
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