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Cytomegalovirus infection.

C Climent¹, R Vélez, J A Capriles

¹Department of Pathology School of Medicine, Medical Sciences Campus, UPR.

Boletin De La Asociacion Medica De Puerto Rico

|January 1, 1992

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Cytomegalovirus (CMV) infection after blood transfusions is usually asymptomatic. CMV-seronegative blood products are recommended for specific high-risk groups, including premature infants and transplant recipients, to prevent serious illness.

Area of Science:

Infectious Diseases
Transfusion Medicine
Virology

Background:

Post-transfusion Cytomegalovirus (CMV) infection typically leads to asymptomatic seroconversion.
CMV infection poses a risk to the fetus in seronegative pregnant women, necessitating CMV-screened blood products.
Immunocompromised individuals are at higher risk for significant disease following CMV exposure.

Observation:

Asymptomatic seroconversion is the most common outcome of post-transfusion CMV infection.
Seronegative pregnant women are a key immunocompetent group requiring CMV-reduced blood products due to fetal risks.
Certain immunocompromised patient groups can develop severe illness from CMV.

Findings:

CMV-seronegative blood is recommended for infants under 1200g, seronegative bone marrow transplant recipients with seronegative donors, and seronegative renal transplant recipients with seronegative donors.

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Seronegative heart and liver transplant patients can receive CMV-seronegative blood if the donor is also seronegative.

CMV-seronegative HIV-infected individuals may benefit from transfusion with CMV-seronegative blood products.

Implications:

Targeted transfusion of CMV-seronegative blood products is crucial for preventing adverse outcomes in vulnerable populations.
Reducing CMV transmission risk through blood transfusion is essential for specific immunocompromised patients and pregnant women.
Guidelines for CMV-seronegative blood product use should be considered for high-risk groups to improve patient safety and clinical outcomes.