Cytomegalovirus in Australian blood donors: seroepidemiology and seronegative red blood cell component inventories

Transfusion
Daniel V LanciniRobert L Flower

Abstract

Cytomegalovirus (CMV) can lead to severe disease in high-risk subpopulations. To prevent transfusion-transmitted CMV in these patient groups, the Australian Red Cross Blood Service maintains inventories of CMV-seronegative fresh blood components. Donor demographic data and CMV seroscreening results for all blood donations and blood components issued in Australia between financial years (FYs) 2008/09 to 2012/13 inclusive were obtained. Population estimates were also extracted for the calculation of age-weighted seroprevalence estimates. Linear regression was used to model trends in red blood cell (RBC) component acquisition and demand. The estimated age-weighted seroprevalence of CMV in 20- to 69-year old Australians was 76.12 ± 0.13%, with higher seroprevalence in females and older age groups. Seroprevalence decreased over the study period, while the demand for CMV-seronegative RBC components increased. It was predicted that component acquisition may be insufficient by FY 2017/18 if current trends persist. These findings represent an evaluation of CMV seroepidemiology in Australia and form a basis to predict the future status of CMV-seronegative RBC component inventories. The results will serve to guide Blood Service operations...Continue Reading

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