TABLE 2.

Tissue distribution of FMDV RNA and infectious virus during persistent phase of infection in nonvaccinated cattle^a

^aThe numbers in the table represent the log₁₀ genome copy number (GCN) per milligram of FMDV RNA in tissue or the log₁₀ GCN per milliliter of oropharyngeal fluid (probang samples). Bold numbers in cells with orange shading, samples were positive for both FMDV RNA (by qRT-PCR) and virus isolation; + in cells with orange shading, virus isolation was positive but the FMDV RNA content was below the limit of detection; −, double-negative samples; bold numbers in cells with yellow shading, samples were virus isolation positive following TTE treatment of tissue macerates; ID, identifier; Neg, negative; LN, lymph node. The limits of detection were 1.53 log₁₀ FMDV GCN/mg of tissue and 1.57 log₁₀ FMDV GCN/ml OPF.