Researching the natural history of transfusion-transmitted infections: The UK hepatitis C (HCV) national register

Helen Harrison*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review


On the rare occasions when infections are acquired following transfusion, a unique opportunity can arise to study the natural history of the infectious agent in question. These studies are particularly useful when little is known about the outcome of the infection, for example when the agent is newly discovered or if it is rare. When recipients of potentially infected blood are traced during a look-back exercise, large groups of patients who may have acquired the infection are identified (HCV Look-back Collation Collaborators, 2002). Patients who are traced in this way can be invited to participate in natural history studies because the precise dates when they acquired their infections are usually known. Information about transfusion recipients who test negative for the agent in question can be equally useful as they can sometimes provide control data for comparison. Because the date of acquisition of infection is usually known, it is possible to study the natural history of infections that have a relatively benign early course from the precise date of acquisition. Under normal circumstances such infections may not be detected until much later, when patients present with symptoms. If no symptoms develop then the infections may never be detected. The recruitment and subsequent collection of regional or national data into a central database, or register, is a prerequisite for undertaking such natural history studies. An example of such a database is the UK hepatitis C (HCV) national register.

Original languageEnglish
Title of host publicationTransfusion Microbiology
PublisherCambridge University Press
Number of pages6
ISBN (Electronic)9780511545245
ISBN (Print)9780521453936
Publication statusPublished - 1 Jan 2008

Bibliographical note

Publisher Copyright:
© Cambridge University Press 2008 and 2009.


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