A cost-benefit analysis for the diagnostic assays was performedto compare them with two alternatives for fire blightdiagnosis; (1) visual diagnosis in the field or (2) culture anddiagnosis in a disease diagnostic laboratory. For lab assays,the cost per sample for standard diagnosis was directly obtainedfrom the website of Plant Disease Diagnostic Clinic atCornell University (http://plantclinic.cornell.edu/fees.html).