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      Evaluation of three commercially-available chikungunya virus immunoglobulin G immunoassays Translated title: Evaluación de tres inmunoensayos comercializados de inmunoglobulina G para el diagnóstico del virus del chikungunya

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          ABSTRACT

          The emergence of chikungunya virus in the Americas means the affected population is at risk of developing severe, chronic, rheumatologic disease, even months after acute infection. Accurate diagnostic methods for past infections are essential for differential diagnosis and consequence management. This study evaluated three commercially-available chikungunya Immunoglobulin G immunoassays by comparing them to an in-house Enzyme-Linked ImmunoSorbent Assay conducted by the Centers for Disease Control and Prevention (Atlanta, Georgia, United States). Results showed sensitivity and specificity values ranging from 92.8% – 100% and 81.8% – 90.9%, respectively, with a significant number of false-positives ranging from 12.5% – 22%. These findings demonstrate the importance of evaluating commercial kits, especially regarding emerging infectious diseases whose medium and long-term impact on the population is unclear.

          RESUMEN

          Como consecuencia de la aparición del virus del chikungunya en las Américas, la población afectada corre el riesgo de padecer reumatismos crónicos graves, aun meses después de la infección aguda. Es fundamental contar con métodos precisos para diagnosticar los antecedentes de la infección a fin de elaborar un diagnóstico diferencial y abordar las manifestaciones de la fase crónica. Se han estudiado tres inmunoensayos comercializados de detección de inmunoglobulinas G para el diagnóstico del chikungunya, comparándolos con el enzimoinmunoanálisis de adsorción (ELISA) propio. Los resultados señalan valores de sensibilidad del 92,8% al 100% y de especificidad del 81,8% al 90,9%, así como un número significativo de falsos positivos, de entre el 12,5% y el 22%.

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          Most cited references7

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          Chikungunya in the Americas.

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            Detection of anti-arboviral immunoglobulin G by using a monoclonal antibody-based capture enzyme-linked immunosorbent assay.

            Monoclonal antibody (MAb)-based capture enzyme-linked immunosorbent assays (ELISAs) for the detection of anti-arboviral immunoglobulin G (IgG ELISAs) were developed for a comprehensive array of medically important arboviruses from the Alphavirus, Flavivirus, and Bunyavirus genera. Tests were optimized and standardized so that maximum homology could be maintained among working parameters for the different viral agents, enabling a wide range of viruses to be easily tested for at one time. MAbs were screened for suitability as capture vehicles for antigens from the three genera. The final test configuration utilized group-reactive MAbs eastern equine encephalitis virus 1A4B-6, dengue 2 virus 4G2, and La Crosse encephalitis virus 10G5.4 to capture the specific inactivated viral antigens. Serum IgG was detected by using alkaline phosphatase-conjugated anti-human IgG (Fc portion). A dilution of 1:400 was chosen as the universal screening serum dilution, with endpoint titrations of serum samples testing positive eliminating occasional false-positive results. IgG ELISA results correlated with those of the standard plaque-reduction neutralization assays. As expected, some test cross-reactivity was encountered within the individual genera, and tests were interpreted within the context of these reactions. The tests were standardized for laboratory diagnosis of arboviral infections, with the intent that they be used in tandem with the corresponding IgM antibody-capture ELISAs.
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              Chikungunya viral arthritis in the United States: a mimic of seronegative rheumatoid arthritis.

              Chikungunya virus (CHIKV) is an arthritogenic mosquito-transmitted alphavirus that spread to the Caribbean in 2013 and to the US in 2014. CHIKV-infected patients develop inflammatory arthritis that can persist for months or years, but little is known about the rheumatologic and immunologic features of CHIKV-related arthritis in humans, particularly as compared to rheumatoid arthritis (RA). The purpose of this study was to describe these features in a group of 10 American travelers who were nearly simultaneously infected while visiting Haiti in June 2014.
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                Author and article information

                Journal
                Rev Panam Salud Publica
                Rev. Panam. Salud Publica
                rpsp
                Revista Panamericana de Salud Pública
                Organización Panamericana de la Salud
                1020-4989
                1680-5348
                05 July 2017
                2017
                : 41
                : e62
                Affiliations
                [1 ] normalizedCaribbean Public Health Agency orgnameCaribbean Public Health Agency Port of Spain Trinidad and Tobago originalCaribbean Public Health Agency, Port of Spain, Trinidad and Tobago.
                [2 ] normalizedCenters for Disease Control and Prevention orgnameDivision of Vector-Borne Diseases Fort Collins Colorado United States originalCenters for Disease Control and Prevention, Division of Vector-Borne Diseases, Fort Collins, Colorado, United States of America.
                Author notes
                Send correspondence to: Pablo De Salazar, pmartinezdesalazar@ 123456gmail.com

                Conflict of interests.

                None declared.

                Article
                RPSP.2017.62
                10.26633/RPSP.2017.62
                6612722
                28902275
                a24ede70-d1cb-4f12-8eba-e380672968c3

                 

                History
                : 27 November 2015
                : 13 July 2016
                Page count
                Figures: 0, Tables: 2, Equations: 0, References: 10
                Categories
                Brief Communication

                chikungunya virus,reagent kits,diagnostic,immunoassay,immunoenzyme techniques,fluorescence polarization immunoassay,caribbean region,americas,virus chikungunya,juego de reactivos para diagnóstico,inmunoensayo,técnicas para inmunoenzimas,inmunoensayo de polarización fluorescente,región del caribe,américas

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