Abstract:
BACKGROUND:Between 2005 and 2007, Chikungunya virus (CHIKV) caused a massive epidemic on Reunion Island with a major peak in the number of cases in February 2006. Blood donation was interrupted on the island in January 2006. STUDY DESIGN AND METHODS:Estimates of the mean risk of viremic blood donation on Reunion Island were computed for different phases of the epidemic. Calculations used CHIKV incidence estimates derived from sentinel surveillance, duration of viremia, and frequency of asymptomatic infection. Data on these two last parameters were initially based on hypotheses and subsequently obtained from studies carried out during the outbreak. The estimated risk was compared to the results of CHIKV nucleic acid testing (NAT) implemented for platelet (PLT) donations screening. RESULTS:Over the course of the outbreak, the mean risk was estimated at 132 per 100,000 donations. The risk peaked at 1,500 per 100,000 donations at the height of the outbreak in February 2006. In total, 47 blood donations would have been potentially viremic if blood collection had not been interrupted. During this period, an estimated 312,500 of 757,000 inhabitants had been infected by mosquito-borne transmission. From January to May 2006, the estimated mean risk (0.7%) and observed risk on PLT donations (0.4%) were of the same order of magnitude. CONCLUSION:During this large outbreak, the estimated risk of viremic blood donation was high, but low compared to the risk of mosquito-borne CHIKV transmission. The estimated risk was corroborated by the concordant results with the observed risk.
journal_name
Transfusionjournal_title
Transfusionauthors
Brouard C,Bernillon P,Quatresous I,Pillonel J,Assal A,De Valk H,Desenclos JC,workgroup \Quantitative Estimation of the Risk of Blood Donation Contamination by Infectious Agents\.doi
10.1111/j.1537-2995.2008.01646.xsubject
Has Abstractpub_date
2008-07-01 00:00:00pages
1333-41issue
7eissn
0041-1132issn
1537-2995pii
TRF01646journal_volume
48pub_type
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