The IDEXX CCPP Ab Test is a competitive enzyme-linked immunosorbent assay (cELISA) based on the monoclonal antibody Mab 4.52. Because of its high specificity, the IDEXX CCPP Ab Test is effective in areas where no vaccination is used. The test can also detect significant levels of antibodies in vaccinated animals (as vaccine lots conform to OIE prescriptions) The IDEXX CCPP Ab Test was developed by the CIRAD-EMVT (the Food and Agriculture Organization’s world reference center for CCPP) and can be used for official CCPP control. The test has been validated through a collaborative project (Ethiopia, Kenya).