Epidemiology of Parvovirus B19 and Anemia Among Kidney Transplant Recipients
Khoury N, Thongprayoon C, Leeaphorn N, Bruminhert J, and Cheungpasitporn W. Epidemiology of Parvovirus B19 and Anemia Among Kidney Transplant Recipients. Am J Transplant 2019; 19:830-831.
Am J Transplant
Purpose: Persistent anemia has been described in kidney transplant (KTX) recipients with Parvovirus B19 virus infection. However, epidemiology of Parvovirus B19 and Parvovirus B19-related anemia after KTx remains unclear. The study's aims were 1) to investigate the frequency of Parvovirus B19 infection and 2) to assess the incidence of Parvovirus B19-related anemia in KTx recipients. Methods: Aliterature search for studies that reported the occurrence rate of Parvo-virus B19 infection and/or seroprevalence of Parvovirus B19 inKTx recipientswas conducted using Medline, Embase, and Cochrane Database from inception through October 2018. Effect estimates from the individual study were extracted and combined using random-effect, generic inverse variance method of DerSimonian and Laird. Results: 15 observational studies with a total of 1, 757 KTx patients were enrolled. Overall, the pooled estimated seroprevalence of Parvovirus B19 IgG was 87. 4% (950/oCI: 64. 4°/<, 96. 4%). The pooled estimated occurrence rate of positive Parvovirus B19 DNA in the first year after KTx was 9. 7% (95%CI: 4. 7°/<, 18. 9%). Sensitivity analysis excluding a study (that solely included KTx patients with anemia) was performed, and showed the pooled estimated occurrence rate of positive Parvovirus B19DNAafterKTxof8. 6%(95%CI: 4. 0%-17. 6%). Meta-regression analysis demonstrated no significant correlations between the year of study and occurrence rate of positive Parvovirus B19 DNA (P = 0. 93). Among KTx recipients with positive Parvovirus B19 DNA, the pooled estimated incidence rates of anemia and severe anemiawere37. 6o/o(95o/oCL25. 8o/o-51. 1o/o)and22. 3o/o(7. 1o/<, 51. 9o/o), respectively. Egger's regression asymmetry test was perforated and showed no publication bias in all analyses. Conclusions: Parvovirus B19 infection occurs mostly within the first year post-transplant. The overall estimated occurrence of positive Parvovirus Bl 9 DNA after KTX is 9. 70/0. The estimated incidence of anemia among KTx recipients with positive Parvovirus B19 DNA is 21. 6%. Parvovirus B 19 should be ruled out in cases of persistent anemia after transplant. [Figure Presented].