You are here Home Resources Handbook tables Handbook tables List. Specified medical conditions associated with increased risk of invasive meningococcal disease Listen Print Share Twitter Facebook Email Conditions defects in, or deficiency of, complement components, including factor H, factor D or properdin deficiency people with acquired complement deficiency due to receipt of complement inhibitor therapy (including but not limited to eculizumab or ravulizumab) functional or anatomical asplenia, including sickle cell disease or other haemoglobinopathies, and congenital or acquired asplenia HIV, regardless of disease stage or CD4+ cell count haematopoietic stem cell transplant Related diseases Meningococcal disease Page history Last updated 28 June 2023 Last reviewed 28 June 2023 Is there anything wrong with this page? Help us improve the Australian Immunisation Handbook What you were doing? (required) What went wrong? (required) Leave this field blank