<prompt> Patients undergoing splenectomy require following vaccinations exceptPneumococcusGonococcusHaemophilusInfluenza  <response>: Postsplenectomy septicaemia may result from Streptococcus pneumoniae, Neisseria meningitides, Haemophilus influenzae and Escherichia coli. Oppounist post-splenectomy infection OPSIIf elective splenectomy is planned, consideration should be given to vaccinating against pneumococcus, meningococcus C both repeated every 5 years and H. influenzae type B Hib repeated every 10 years.Ref: Bailey and love 27e pg: 1187 