Table 1 Risk condition classifications

At-risk

Diabetes mellitus, chronic lung disease (including asthma), chronic heart disease and neurological disorders

High-risk

Cancer, chronic renal disease, functional or anatomic asplenia, sickle cell disease/other hemoglobinopathy, congenital or acquired asplenia, splenic dysfunction, splenectomy, HIV infection, immuno-compromising diseases, organ transplants, chronic liver disease and autoimmune disease

Cerebrospinal fluid leak, cochlear implant