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Recombinant NS1 Protein Based Indirect IgG ELISA for Sero Surveillance of Japanese Encephalitis, and Kit Thereof

Background:
Japanese encephalitis (JE) is a mosquito-borne viral zoonotic disease due to which hundreds of children die every year in India. Swine act as sentinel animal for control of disease in humans. The present invention refers to development of an ELISA for diagnosis of Japanese encephalitis in swine using a recombinant non-structural protein 1 (NS1). The described invention is unique and novel as other ELISA available in the market either employ whole JE virus (JEV) antigen or Envelope antigen, both of which suffer from specific limitations. The preparation of whole JEV antigen involves risk of exposure to live virus. On the other hand, recombinant envelope protein possesses cross reacting epitopes which results in decreased specificity of the assay. Technology Details An indigenously manufacture kit for sero-monitoring of JE in swine is made available with this invention. Handling live JEV is not required. Crossreaction with other closely related Flavivirus is eliminated. No need of importing ELISA kits which are costly. This indigenously developed ELISA kit can be readily in-cooperated into surveillance program which in turn will save the life of several children. Patent has been applied in Indian Patent office (Application No.201611024016 A). Date of filing: 13/7/2016.