This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
HACEK group includes all of the following except 
Select and explain. 
A. Hemophilus arophilus, B. Acinetobacter baumanni, C. Eikenella corrodens, D. Cardiobacterium hominis
B: Acinetobacter baumanni
Answer: B: Acinetobacter baumanni 
Explanation: Ans. (b) Acinetobacter baumanni Ref. Harrison 17/e, p 926; 18/e, p 1233 HACEK organism are a group of fastidious, slow growing, Gram negative bacteria whose growth requires an atmosphere of CO,. Species belonging to this group include: Hemophilus species Actinobacillus actinomycetemcomitans Cardiobacterium homin us Eikenella corrodens Kingella kingae Endocarditis is the most common disease caused by them.