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Old 02-22-2010
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Question Pneumonia bug

A 36 years HIV positive man presented with classical symptoms of pneumonia. Chest X ray showed bilateral consolidation. Organism cultured from the sputum was lysed by ethylhydocupreine (optochin).
What is the most likely infecting agent?

A- Streptococcus agalactiae
B- Streptococcus pneumoniae
C- Streptococcus viridins
E- Staphylococcus aureus
E- Staphylococcus epidermidis
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Old 02-23-2010
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streptococcus pneumoniae is inhibited by optochin
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microbiology , respiratory , step1qpool

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