Table 3. Presentation of the obtained results of testing surface swabs and ready-to-eat food.

Target gene	Swab		Ready-to-eat meal
	Positive	Negative	Positive	Negative
E	0 (3 weeks positive)	60	0	40
RdRp	0 (1 week positive)	1	NA	NA
N	0	1	NA	NA

E=envelope protein, RdRp=RNA-dependent RNA polymerase, N=nucleocapsid protein, NA=not available