Aetiology | Severe alcoholism, hypogammaglobulinemia, pneumoniae neutropenia, drepanocytic anemia, splenectomy, function deficiency, suppressiveimmunological therapy, acquired duramatralbreach | Suggestive features and comments |
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Extremes of age, pregnancy, hepatic cirrhosis, | ||
Streptococcus pneumoniae | Haemophilus influenzae | Severe alcoholism, hypogammaglobulinemia, neutropenia, drepanocytic anemia, splenectomy, polynuclear function deficiency, suppressive immunological therapy, acquired duramatral breach |
haemochromatosis, chronic renal failure, cellular immunodeficiency (Hodgkin’s and non Hodgkin’s lymphoma, chronic lymphoid leukaemia, corticotherapy, organ transplantation | ||
Neisseria meningitidis | Streptococcus pneumoniae | Complement deficiency must be suspected. However, there are no real risk groups. Classically, epidemics occur in closed populations of young adults. |
If suspicion of penicillin-resistant pneumococci and/or signs of severity | ||
Listeria monocytogenes | Listeria monocytogenes | Extremes of age, pregnancy, hepatic cirrhosis, haemochromatosis, chronic renal failure, cellular immunodeficiency (Hodgkin's and non-Hodgkin's lymphoma, chronic lymphoid leukaemia, corticotherapy, organ transplantation) |