immunity National Center for Biotechnology Information NCBI NLM MEDLINE review humans pubmed abstract nih national institutes of health national library of medicine community-acquired infections / epidemiology neoplasms / complications* practice guideline alison g freifeld communicable diseases / etiology communicable diseases / epidemiology* risk assessment antibiotic prophylaxis cellular community-acquired infections / prevention & control antifungal agents / therapeutic use mycoses / epidemiology soft tissue infections / prevention & control soft tissue infections / epidemiology immunocompromised host* virus diseases / prevention & control communicable diseases / immunology pneumococcal infections / prevention & control viral vaccines / administration & dosage pneumococcal infections / epidemiology adrenal cortex hormones / administration & dosage mycoses / prevention & control neoplasms / immunology pmid:18319048 doi:10.6004/jnccn.2008.0013 brahm h segal angelina s the cytomegalovirus infections / prevention & control neutropenia / epidemiology nose diseases / epidemiology nose diseases / prevention & control primary prevention* virus diseases / epidemiology