Sensitivities of the MSD-ELISAs and the IS-ELISA against the FMDV-positive field samples by RT-PCR.

*A total of 178 RT-PCR-positive samples (135 oral swab samples, 7 nasal samples, 24 oral and nasal swab samples, 12 samples of 10% emulsion of homogenized epithelial tissue) collected in the 2010 type O FMD outbreak in Japan from 78 farms were used.†In both the MSD-ELISAs and the IS-ELISA, OD results ( = sample OD − average negative OD) of 0.1 or more were judged as positive.‡Fractions in parentheses show ELISA-positive samples or farms/RT-PCR-positive samples or farms.§The amounts of two samples were insufficient for the test.∥The sensitivities against farm units were calculated using the sensitivities against samples.