Table 4. Organisms implicated in febrile neutropenia.

Gram positive	Gram negative	Fungi	Viruses
Staphylococcus spp. (S. epidermidis S. aureus) Coagulase-negative staphylococci Streptococcus spp. (alpha-haemolytic)and Pyogenes, pneumoniae Viridans group Enterococcus spp. (E. faecium) including Vancomycin-resistant strains Bacillus spp. (B. cereus) Clostridium spp. (C. difficile) Literia monocytogrnus	Enterobacteriaceae (E. coli, Klebsiella spp., Enterobacter spp., Serratia spp.) Pseudomonas aeruginosa Stenotrophomonas maltophilia Anaerobes	Candida spp. Aspergillus spp. Zygomycetes Fusarium spp.	Herpes simplex virus Varicella zoster virus Cytomegalovirus Epstein-Barr virus Adenovirus Influenza virus Para-influenza virus Respiratory syncytial virus

Modified from Pizzo and Poplack.¹⁹