There is no proven prevention. Good general hygiene is helpful. Some doctors may recommend preventive antibiotics for people with many infections, particularly with Staphylococcus aureus. This does not change the underlying disorder but rather its consequences.
Cohen J, Powderly WG. Infectious Diseases. 2nd ed. New York, NY: Elsevier; 2004.
Hoffman R, Benz EJ, Shattil SS, et al. Hematology: Basic Principles and Practice. 4th ed. Orlando, Fl: Churchill Livingstone; 2005.