<prompt> Splenectomy can be performed after immunization against which of the following organisms:Haemophilus influenzaStreptococcal pneumoniaNeisseria meningitidesAll of the above  <response>: 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. 