HEPATITIS E VIRUS MONITORING RESULTS AND ITS LABORATORY SCREENING ALGORITHM
Abstract
Background. Individual cases of viral hepatitis E are recorded in the Republic of Belarus annually indicating the need for the pathogen monitoring at both the population and reservoir levels. Objective. To consolidate the monitoring data on hepatitis E virus over the period of 2018 - 2021, as well as to work out an effective algorithm for its laboratory screening. Material and methods. As part of the study, 345 samples were analyzed, including 227 human biological samples, 37 samples of biological materials of domestic pigs, 22 samples of food and 59 samples of waste water. Results. According to the results of serum diagnostics, in the group of kidney recipients (n = 29), the detection rate of IgM and IgG to hepatitis E virus was 6.9% [0.85%; 23.03%] and 17.2% [7.13%; 35, 02%] respectively; in the group of patients with pregnancy pathology (n = 44) - 6.8% [1.68%; 18.89%] and 11.4% [4.5%; 24.43%] respectively. In patients with acute hepatitis of unknown etiology (n = 26), antiviral IgM was not detected, while the frequency of antiviral IgG detection reached 7.7% [1.02%; 25.26]. In control group (blood donors, n = 53) IgM and IgG were detected in 1.9% [0.6%; 10.88%] and 5.7% [1.35%; 15.97] of those examined respectively. Hepatitis E virus RNA was detected in 8 human biological samples (3.8%) from kidney recipients. The identified hepatitis E viruses were represented by genotype GIII and belonged to a previously unidentified subgenotype (GIIIa - GIIIi). In the studied samples of biological material from pigs, as well as in samples of food and waste water, hepatitis E virus RNA was not detected. Conclusions. An algorithm for hepatitis E virus laboratory screening has been developed and tested. Its section concerning the diagnosis of viral hepatitis E is set out in the Instructions for use "Algorithm for laboratory diagnosis of viral hepatitis E" (No. 148-1220 from January 28, 2021).
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Amvrosieva TV, Paklonskaya NV, Kaltunova YB, Belskaya IV, Kishkurno EP, inventors; Republican Research and Practical Center for Epidemiology and Microbiology, assignee. Algoritm laboratornogo kontrolja za virusnym gepatitom E. Instrukcija po primeneniju BY № 148-1220. 28.01.2021. Minsk; 2020. 13 p. (Russian).
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