Viral
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Epstein-Barr Virus, Cytomegalovirus, Parvovirus, Herpes Simplex Virus, Varicella-Zoster Virus, Measles, Human Herpes Virus-8, H1N1 Influenza Virus, Parechovirus, HIV
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Bacterial
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Brucella spp., Gram negative bacteria, Mycobacterium tuberculosis, Staphylococcus aureus,
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Fungal
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Candida, Cryptococcus, Pneumocystis, Histoplasma, Aspergillus
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Parasitic
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Plasmodium falciparum, Plasmodium vivax, Toxoplasma, Leishmania, Strongyloides
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Inflammatory
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Systemic juvenile idiopathic arthritis, Kawasaki’s disease systemic lupus erythematosus and other rheumatologic diseases
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Neoplastic
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T-cell/NK-cell lymphomas, anaplastic large cell lymphomas, acute lymphoblastic leukemia, Hodgkin’s lymphoma, various solid tumours (prostate, lung, hepatocellular carcinoma)
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Immunodeficiencies
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Inherited or acquired immunodeficiency
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