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Lung transplant recipients are at high risk for developing cytomegalovirus (CMV) disease. Current guidelines recommend that all CMV seropositive patients receive at least 6 months of antiviral prophylaxis after transplantation (Transplantation 2013; 96:333). However, consensus about when to stop antiviral therapy is lacking, so that some patients are likely to be undertreated and others overtreated. T-cell responses are critical for CMV immune control, but a peripheral-blood test measuring release of a single cytokine, interferon-γ (IFN-γ), by antigen-stimulated CD8+ T lymphocytes has had limited usefulness in predicting whether CMV disease will develop.
To assess whether polyfunctional immunological profiling of CMV-specific T-cell response…