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Transfusion-transmitted malaria: a systematic review and meta-analysis

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Ehsan Ahmadpour, Masoud Foroutan-Rad, Hamidreza Majidiani, Sirous Mehrani Moghaddam, Kareem Hatam-Nahavandi, Seyed-Abdollah Hosseini, Mohammad Taghi Rahimi, Aleksandra Barac, Salvatore Rubino, Mehdi Zarean, Alexander G Mathioudakis, Muge Cevik

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Background: Malaria transmission through blood transfusion is an accidental but preventable cause of malaria infection and is increasingly becoming a matter of concern for blood transfusion services. This systematic review was conducted to provide a summary of evidence about the prevalence of Plasmodium infection in asymptomatic blood donors and the effectiveness of screening methods used based on the available literature.

Methods: PRISMA guidelines were followed. Scopus, PubMed, Science Direct, and EMBASE were searched from 1982 to October 10, 2017. All peer-reviewed original research articles describing the prevalence of malaria parasitemia in blood donors with different diagnostic methods were included. The random-effects model was applied to assess the effects of heterogeneity among the selected studies. Incoherence and heterogeneity between studies were quantified by I2 index and Cochran's Q test. Publication and population bias was assessed with funnel plots and Egger's regression asymmetry test. All statistical analyses were performed using Stata (version 2.7.2).

Results: Seventy-one studies from 21 countries, 5 continents, were included in the present systematic review. The median prevalence of malaria parasitemia among 984 975 asymptomatic healthy blood donors was 10.54%, 5.36%, and 0.38% by microscopy, molecular methods (polymerase chain reaction), and rapid diagnostic tests, respectively. The most commonly detected Plasmodium species was P. falciparum.

Conclusions: This systematic review demonstrates that compared with other transfusion-linked infections, that is, HIV, HCV, and HBV, transfusion-transmitted malaria is one of the most significant transfusion-associated infections especially in Sub-Saharan Africa. Future work must aim to understand the clinical significance of transfusion-transmitted malaria in malaria-endemic settings.



Original languageEnglish
Article numberofz283
Number of pages8
JournalOpen Forum Infectious Diseases
Issue number7
Early online date11 Jun 2019
Publication statusPublished - Jul 2019

    Research areas

  • Blood donor, Plasmodium, Systematic review, Transfusion-associated infections, Transfusion medicine

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