Gram Negative Bacilli
A 65-year-old diabetic man presents to the emergency room with a severe productive cough producing thick bloody sputum resembling a "currant-jelly" like appearance. Culture using MacConkey agar reveals pink colonies, with large mucoid colonies on routine laboratory mediA. Which of the following organisms is most likely responsible for this patient's pneumonia? (AIPG 2010)
a. Patients with K. pneumoniae infections usually have predisposing conditions such as alcoholism, advanced age, chronic respiratory disease, and diabetes.
b. The "currant-jelly" sputum distinguishes K. pneumoniae from the other organisms. Infections can lead to necrosis and abscess formation.