This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Infection, Subject name: Pediatrics
Splenectomy can be performed after immunization against which of the following organisms: 
Select and explain. 
A. Haemophilus influenza, B. Streptococcal pneumonia, C. Neisseria meningitides, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: Ans. D. All of the aboveSplenectomy is usually performed after 6 years of age following immunizations against H influenza type b, streptococcal pneumonia and Neisseria meningitides. Post splenectomy patients receive penicillin prophylaxis to prevent sepsis usually up to adulthood.