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. 2024 Nov:26 Suppl 1:e14356.
doi: 10.1111/tid.14356. Epub 2024 Aug 16.

Donor-derived dengue infections - A review of screening protocol and outcomes in an endemic country

Sophie Seine Xuan Tan  1   2 , Samsudin Bin Nordin  3 , Chee-Kiat Tan  2   3   4 , Thuan Tong Tan  1   2   5 , Shimin Jasmine Chung  1   2   5 , Kian Sing Chan  2   6 , Ban Hock Tan  1   2   5
Affiliations

Donor-derived dengue infections - A review of screening protocol and outcomes in an endemic country

Sophie Seine Xuan Tan et al. Transpl Infect Dis. 2024 Nov.

Abstract

Background: Donor-derived dengue infections present significant challenges to organ transplantation, particularly in endemic regions like Singapore. Although primarily transmitted by Aedes mosquitoes, dengue can also be transmitted through organ transplantation, occasionally with fatal outcomes. This study aims to evaluate the outcomes and evolution of dengue screening protocols for potential deceased donors in Singapore from 2006 to 2022.

Methods: Initially, screening was done via dengue immunoglobulin M (IgM), targeting donors with specific clinical criteria (thrombocytopenia, drop in platelet count, prolonged prothrombin time/partial thromboplastin time, and discretion of the transplant team), later transitioning to blood dengue reverse transcription-polymerase chain reaction (RT-PCR) in 2007 with similar criteria, and subsequently universal screening in 2016. In 2021, urine dengue RT-PCR was added following a case of donor-derived dengue infection from an aviremic but viruric donor.

Results: Out of 431 potential deceased donors, 395 (91.6%) underwent dengue screening, with six (1.5%) testing positive for dengue. In 2006, three positive screens were identified: two through dengue IgM and one via blood dengue RT-PCR; subsequent years saw one positive screen each in 2007, 2008, and 2019 via blood dengue RT-PCR. Potential deceased donors with a positive blood dengue screen were rejected as solid organ and tissue donors. Those with negative blood dengue RT-PCR but positive urine dengue RT-PCR would be rejected as kidney donors, but the use of other organs and tissues was at the discretion of the transplantation team.

Conclusion: The optimal screening protocol remains uncertain, but our findings suggest that a universal screening strategy utilizing both blood and urine dengue RT-PCR could be considered in dengue-endemic countries.

Keywords: dengue; donor‐derived; transplant.

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References

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