Q_№261 #case A 27-year-old man presents to the hospital emer | የጤና መረጃ

Q_№261

#case

A 27-year-old man presents to the hospital emergency room with a cough, chest pain, and fever.
Two days before admission he developed a nonproductive cough.
Rales are heard.
Gram stain of sputum was negative. Sputum cultures on blood agar were also negative.
Culture on a special medium containing cholesterol, purines, and pyrimidines produced colonies in 10 days.

Serology 3 weeks later when he returned because of persistent cough but feeling better showed cold agglutinins.


Q①. What is the probable causal agent?


Q②. Why did the organism not show up on the Gram stain?