Vaccines for asplenic patients?,”Following splenectomy, patients should be vaccinated for S. pneumoniae. The PCV13 should be given first
followed by the PPSV23 at least 8 weeks later. These patients should also receive the meningococcal and H. influenzae type B (Hib) vaccines. Vaccinations against these organisms should be administered either > 14 days before scheduled splenectomy or > 14 days after splenectomy.”