Risk factors for development of CMV Infection and Disease

CMV infection is distinct from CMV disease. Infection is defined as isolation of CMV, evidence of viral antigens or viral DNA from a patient's body fluids or tissues. In contrast, CMV disease–for example, pneumonia, colitis, or hepatitis– is recognized by the symptoms of tissue injury in combination with evidence of CMV infection.1

Approximately 50%-75% of organ transplant patients have some evidence of active CMV infection in the first year following transplant.2,3 Whether or not clinical disease develops depends on the interaction of the immunosuppressive regimen, the level of the virus that is achieved, and the state of the patient's immunity against the virus.4

The chart below shows the hierarchy of risk factors based on

Risk factors for development of CMV Infection and Disease Patient-Specific Risk Factors

* Campath and Thymoglobulin are manufactured by Genzyme Corporation

* D+   =   Donor positive CMV
  R+   =   Recipient positive for CMV
  D-   =   Donor negative CMV
  R-   =   Recipient negative for CMV


1. Kotton CN, Fishman JA. Viral infection in the renal transplant recipient. J Am Soc Nephrol. 2005;16(6):1758-74.

2. Hodson EM, Jones CA, Webster AC, Strappoli GFM, et al. Antiviral medications to prevent cytomegalovirus disease and early death in recipients of solid-organ transplants: a systematic review of randomised controlled trials. Lancet. 2005;365:2105-2115.

3. Fishman JA, Emery V, Freeman R, et al. Cytomegalovirus in transplantation—challenging the status quo. Clin Transplant. 2007;21:149-58.

4. McDevitt LM. Etiology and impact of cytomegalovirus disease on solid organ transplant recipients. Am J Health-Syst Pharm. 2001:63(1)(Suppl 5):S3-S9.

5. Snydman DR, Werner BG, Heinze-Lacey B, et al. Use of cytomegalovirus immune globulin to prevent cytomegalovirus disease in renal-transplant recipients. N Engl J Med. 1987;317:1049-54.

6. Razonable RR. Epidemiology of cytomegalovirus disease in solid organ and hematopoietic stem cell transplant recipients. Am J Health Syst Pharm. Apr 15 2005;62(8 Suppl 1):S7-13.

7. Sia I, Patel R. New strategies for prevention and therapy of Cytomegalovirus infection and disease in solid-organ transplant recipients. Clin Micro Rev, January 2000; 86-8.