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      Differentiating infection from vaccination in foot-and-mouth disease using a panel of recombinant, non-structural proteins in ELISA

      Vaccine
      Elsevier BV

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          Abstract

          A profiling ELISA was developed to detect antibody to the non-structural (NS) proteins Lb, 2C, 3A, 3D, and the polyprotein 3ABC, of foot-and-mouth disease virus (FMDV). The assay was used to examine panels of sera from naive cattle, and from experimentally infected or vaccinated animals. All sera from cattle experimentally infected with any of the seven serotypes of FMDV were positive for antibody to 2C, 3A, 3D and 3ABC, and the majority were positive for Lb. The three categories of sera could be differentiated on the basis of the presence or absence of antibody to the structural and/or NS proteins of FMDV. The assay is simple, rapid and reproducible and can be used to identify previous infection in animals which are seropositive for antibody to the structural proteins of the virus. Validating the assay with field sera demonstrated that antibody to 3ABC, and usually one or more of the other non-structural proteins, was detected only in animals reported to have shown clinical signs of FMD. Vaccinated cattle which had received less than five vaccinations, were frequently positive for antibody to 3D but were negative for antibody to 3ABC. Occasional animals which had received more than ten vaccinations had NS protein antibody profiles which were similar to those seen following infection.

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          Author and article information

          Journal
          Vaccine
          Vaccine
          Elsevier BV
          0264410X
          March 1998
          March 1998
          : 16
          : 5
          : 446-459
          Article
          10.1016/S0264-410X(97)00227-2
          9491499
          84f8a579-f068-4b9f-add6-0cb19bf23f65
          © 1998

          https://www.elsevier.com/tdm/userlicense/1.0/

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