Since rheumatoid arthritis has a long preclinical phase, and pathogenic factors for rheumatoid arthritis circulate in the blood, there are concerns whether or not the disease can spread through blood transfusions. Using two analytical methods and SCANDAT2, Andreas et al. showed no evidence that rheumatoid arthritis could be transferred through blood transfusions. This finding was published in Annals of the Rheumatic Diseases.
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Just S, Rostgaard K, Titlestad K, et al. Transmission of rheumatoid arthritis through blood transfusion: a retrospective cohort study. Ann Rheum Dis. March 2018. [PubMed]