. 2022 Jan 14;14(1):148. doi: 10.3390/v14010148

Table 1.

The proportion of PRV1-positive NS and OF and summary of PRV1 real-time PCR results in NS expressed as Ct values from 23 PRV1-positive farms. Ct ≤ 37.0 was considered positive.

Farm ID	Type of Production	Ct Values in NS from Different Age Groups							% of PRV1-Positive Samples
		Nursery Pigs				Fatteners			% of PRV1-Positive Samples
		5	7	9	11	13	15	≥17	NS	OF
B4	Multiplicating farms	33.1 ^●	- ^●	-	-	-	-	-	14.3	28.6
B6		27.1 ^x	29.1 ^x	- ^●	-	-	-	-	28.6	20.0
B13		-	- ^●	-	-	-	-	-	-	14.3
A1	Farrow-to-finish farms	-	33.9 ^●	-	-	-	29.8	-	28.6	14.3
C8		29.1 ^x	35.5 ^●		- ^●	- ^●	24.7 ^●		60.0	100.0
D9		23.9 ^x	29.6 ^●		30.9 ^●		31.0 ^●		100.0	100.0
E10		29.7 ^●	-	-	-	-	-	- ^●	14.3	28.6
F11			- ^x	- ^●		36.6 ^●	24.4	36.9	60.0	50.0
G21			31.4 ^●	35.7	-	-	- ^●	31.5 ^●	50.0	50.0
H22		33.3 ^●		- ^x		- ^●	- ^●		25.0	100.0
I23		30.9	37.0		33.9 ^●	34.3		-	80.0	14.3
B2	Nursery farms	27.8 ^●	- ^●	32.5	-				50.0	50.0
B5		30.6 ^●	35.3 ^●	-	36.0 ^●				75.0	75.0
B12		26.3 ^x	33.5 ^x	36.0 ^x	- ^x				75.0	not tested
B14		- ^●	35.6	-	-				25.0	25.0
B15		28.0 ^●	34.3 ^●	35.1	- ^●				75.0	75.0
B16		32.7 ^x	- ^●	-	-				25.0	33.3
B17		33.6 ^●	-	-	-				25.0	25.0
B3	Fattening farms					26.6	-	-	33.3	-
B7						- ^●	-	24.5 ^●	33.3	66.6
B18						- ^●	-	-	-	33.3
B19						- ^●	-	-	-	33.3
B20						-	-	- ^●	-	33.3
% of PRV1-positive samples		81.3	58.8	26.7	18.8	20.0	26.7	23.1	Total NS: 37.4	Total OF: 39.4
% of PRV1-positive samples		Total: 46.9				Total: 23.3			Total NS: 37.4	Total OF: 39.4

PRV1—porcine respirovirus 1; NS—nasal swabs pool; OF—oral fluid; gray background—age groups of pigs that were not sampled. -—PRV1-negative samples. ^●—age groups of pigs with PRV1-positive OF. ^x—age groups of pigs where OFs were not collected.