1. Population-based analysis of Actinobacillus pleuropneumoniae ApxIVA for use as a DIVA antigen
- Author
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O’Neill, Ciaragh, Jones, Sophie C.P., Bossé, Janine T., Watson, Conrad M., Williamson, Susanna M., Rycroft, Andrew N., Kroll, J. Simon, Hartley, Helen M., and Langford, Paul R.
- Subjects
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ACTINOBACILLUS , *PLEUROPNEUMONIA , *ANTIGENS , *SEROTYPING , *GENETIC mutation , *BACTERIAL vaccines - Abstract
Abstract: APXIVA is an RTX toxin of Actinobacillus pleuropneumoniae that is a candidate antigen to differentiate infected from vaccinated animals (DIVA). Insertion of ISApl1 into the apxIVA gene is known to compromise an APXIVA-based DIVA approach, as is potentially a TGG to TGA mutation in the apxIVA gene. ISApl1 was found in 63/349 (18.1%) A. pleuropneumoniae isolates from England and Wales including serovars 2, 3, 6–8 and 12. No ISApl1 insertions into apxIVA were found. Only two serovar 3 isolates contained the TGG to TGA mutation. We conclude that an ApxIVA-based DIVA approach would potentially be viable in England and Wales. [Copyright &y& Elsevier]
- Published
- 2010
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