volume 51, issue 5, P591-595 2018
DOI: 10.1590/0037-8682-0482-2017
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Abstract: Introduction: West Nile virus (WNV) immunoglobulin M (IgM) antibodies have been shown to persist for up to 500 days in certain patients. To evaluate the usefulness of immunoglobulin G (IgG) avidity assessment in the diagnosis of WNV infection, we analyzed 54 WNV IgM-and/or IgG-positive serum samples from 39 patients with neuroinvasive disease and 15 asymptomatic cases tested during a seroprevalence investigation. Methods: Serological tests (WNV IgM/IgG antibody detection, IgG avidity) were performed using comm…

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