Global status of visceral leishmanial infection among blood donors: a systematic review and meta-analysis

Student Research Committee, Department of Parasitology, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran. Molecular and Cell Biology Research Center, Department of Parasitology, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran. Student Research Committee, Department of Parasitology, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran. Infectious and Tropical Diseases Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran. Department of Microbiology, Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran. Department of Radiology, Imam Khomeini Hospital, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran. Molecular and Cell Biology Research Center, Department of Parasitology, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran.

Transfusion and Apheresis Science : Official Journal of the World Apheresis Association : Official Journal of the European Society for Haemapheresis. 2017;56((5):):748-754
Abstract
INTRODUCTION Transmission of Leishmania through transfusion has been reported from various Visceral leishmaniasis (VL) endemic areas of the world. The true burden of Leishmania infection in blood donors remains generally unknown. Thus, the present systematic review attempted to determine the global prevalence of Leishmania infection among blood donors. METHODS Data were extracted through five English and five Persian databases during the period from 1997 to 2016. Overall, 16 articles fulfilled the inclusion criteria and were used for data extraction in this systematic review. RESULTS In total, 13,743 blood donors from different regions of world were examined. The prevalence rate of Leishmania infection according to seropositivity obtained 7% (95%CI: 5%, 8%). The lowest and the highest prevalence were related to Bangladesh 0.25% (95%CI: 0.0%, 1.0%) and Brazil, 16% (95%CI: 12%, 19%). Seroprevalence rate of leishmaniasis among females was more (4.60%) than males. Of 15 studies included in the meta-analysis, the pooled prevalence rate of molecular tests was obtained 2% (95%CI: 1%, 3%) in which Iran and Spain had the lowest and the highest prevalence, 0.05% and 7%, respectively. Our analysis showed that L. infantum was more common than L. donovani as etiological agent of VL among all donors. CONCLUSION Our data confirms the presence of asymptomatic carriers of VL in endemic areas and supplies as an attentive to the likelihood of these carriers acting as blood donors. Moreover, we conclude that molecular tests for screening in asymptomatic blood donor provide an accurate estimate of the rate of infection over serological tests.
Study details
Study Design : Systematic Review
Language : English
Credits : Bibliographic data from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine