This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Consequences and Complications of Splenectomy, Subject name: Surgery
Which is the commonest Post splenectomy infection : 
Select and explain. 
A. Streptococcus pyogenes, B. Staphylococcus aureus, C. Stseptococcus Pneumonia, D. Pseudomonas aeruginosa
C: Stseptococcus Pneumonia
Answer: C: Stseptococcus Pneumonia 
Explanation: Ans is 'c' ie. Streptococcus Streptococcus pneumoniae is the most common inf. in post splenectomy patient.Schwartz 9/e writes -"The most common causal organism, accounting for as many as 50 to 90% of all OPSI cases, remains pneumococcus. Meningococcus, H. influenzae type B, and group A streptococci follow in order of frequency. "Other organisms common in post splenectomy patients.Haemophilus influenzae type B Meningococcus Group A streptococci Group B streptococci Enterococcus species Bacteroides species Salmonella species Bartonella speciesCapnocytophaga canimorsus (implicated in OP SI as a sequela of dog bites)BabesiaMalaria