Table 1 List of virological, immunological and environmental variables generated in this study and included in statistical analysis

OPF VI

Quantity of live virus in oropharyngeal fluid (OPF) (log₁₀ TCID₅₀/mL)

OPF qRT-PCR

Quantity of FMDV genome copies in OPF (log₁₀ copies/mL)

Blood VI

Quantity of live virus in the blood (log₁₀ TCID₅₀/mL)

Blood qRT-PCR

Quantity of FMDV genome copies in blood (log₁₀ copies/mL)

IFN

Type-1 interferon in serum (IU/mL)

Nasal fluid VI

Quantity of live virus in the nasal fluid (log₁₀ TCID₅₀/mL)

Antibodies

FMDV-specific antibodies detected in serum (titre/mL)

Air sample

Total airborne FMDV per animal per challenge period