We hypothesized that the stress of cardiac surgery and cardiopulmonary bypass can cause reactivation of a latent CMV infection and that reactivation might be more prevalent in patients with complicated post-operative course. The study aims are: * To study whether cardiac surgery is a trigger for latent CMV reactivation and to compare reactivation rate between sub groups of patient with complicated post-operative course and non complicated post operative course. * To study the relationship between expression IL28 SNP rs12979860 and the risk of CMV replication in the non immunocompromised patient undergoing cardiac surgery.
Age range
18 Years
Sex
ALL
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The cumulative of death, prolonged hospitalization, prolonged post-operative mechanical ventilation and prolonged use of vasopressors
Timeframe: 12 months
CMV reactivation: viral load elevation comparing to the baseline level prior to surgery
Timeframe: 12 months