Vaccine matching ‘r’ values of rA/P1-FMDV, A/WH/CHA/09 and O/CHA/99.

aBEI-inactivated virus rA/P1-FMDV, 4 µg/dose.bby VNT.*Figures shown in bold are indicative of likely protection by the relevant vaccine strain. In the case of VNT: r1≥0.3 suggests that there is a close relationship between field isolate and vaccine strain. A potent vaccine containing the vaccine strain is likely to confer protection. r1≤0.3 suggests that the field isolate is so different from the vaccine strain that the vaccine is unlikely to protect.