Table 1. The contingency table showing the detection of African swine fever virus Ag using the PS tests, compared to that using PCR technique.

Ag PS test	PCR technique
	Positive	Negative
Positive	0 (0%)	4 (2%)
Negative	0 (0%)	156 (98%)
Total	0 (0%)	160 (100%)

Ag, antigen; PS, pen-side; PCR, polymerase chain reaction.