Barsha Thapa, Jemma Wadsworth, Nick J. Knowles and Donald P. King

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Presentation transcript:

Barsha Thapa, Jemma Wadsworth, Nick J. Knowles and Donald P. King DEVELOPMENT OF A REFERENCE FOOT-AND-MOUTH DISEASE VIRUS ANTIGEN PANEL FOR THE CONSISTENT VALIDATION OF DIAGNOSTIC ASSAYS Alison Morris, Valérie Mioulet, Britta Wood, Lissie Henry, Ashley Gray, Barsha Thapa, Jemma Wadsworth, Nick J. Knowles and Donald P. King FMD Reference Laboratory

Introduction Foot-and-mouth disease virus (FMDV) is highly diverse, consisting of seven immunologically distinct serotypes Numerous topotypes and lineages. The importance of laboratory-based diagnostics is critical. The aim of this project is to prepare a reference panel suitable for the ongoing validation of existing and novel FMDV diagnostic assays.

Selection of the panel Isolates selected representing Global diversity of FMDV Covering all seven serotypes Large range of topotypes and linages Currently the panel consists of 196 isolates (Figure 1). Used to assess the performance of different antigen detection ELISAs. Data presented: B. Thapa et al., Eu-FMD 2016. Figure 1- Phylogenetic tree of the seven FMDV serotypes that are represented in the reference panel.

Ongoing development Dynamic panel that will be representative of circulating strains Inclusion of other vesicular diseases: Swine Vesicular Disease, Vesicular Stomatitis, Vesicular Exanthema, Seneca Valley virus Assessing performance of new diagnostic assays: Antigen detection, for example bovine Integrin ELISA Molecular diagnostics Provide a reference panel that will be available commercially Inactivated-reducing the biosafety restrictions Selection of the larger panel (~30 isolates)

Many thanks for your time, are there any questions? Acknowledgements This project was supported by the UK Department for Environment, Food and Rural Affairs (Research Project SE1128). The authors would like to thank collaborating FMD Reference Laboratories and other reference laboratories for submitting samples to WRLFMD. Many thanks for your time, are there any questions? FMD Reference Laboratory