Investigation of the First African Swine Fever Outbreak in a Domestic Pig Farm in Hong Kong

Table 1

Laboratory virology results of pigs tested ASFV positive in tissues or blood samples on a domestic pig farm in HK SAR.

Sampling date	Day	Pig	Building	Type	Sample type	rRT-PCR(Ct)	Gel PCR	HAD	VI
Jan 29, 2021	0	1	11	Finisher	Lymph node	20.5	+	+	+
					Spleen	18.2	+	+	+
Feb 3, 2021	5	2	11	Finisher	EDTA blood	17.8	+	ND	ND
		3	11	Finisher	EDTA blood	17.1	+	ND	ND
		4	11	Finisher	EDTA blood	15.3	+	+	+
		5	11	Finisher	EDTA blood	15.5	+	ND	ND
		6	11	Finisher	EDTA blood	21.9	+	ND	ND
		7	11	Finisher	EDTA blood	22.7	+	ND	ND
Feb 5, 2021	7	8	2	Sow	EDTA blood	16.3	+	ND	ND
		9	2	Sow	EDTA blood	17.0	+	+	+
Feb 11, 2021	13	10	12	Finisher	Lymph node	21.4	+	ND	ND
					Spleen	16.5	+	ND	ND

(+): positive; ND: not determined.