TABLE 1.

PCV‐3 PCR detection in pigs suffering from respiratory disorders

			% (and proportion) of PCR positivity
Clinical signs/lesions	Production phase	Tested samples	Diseased animals	Healthy animals	Country	Reference
Respiratory disease with dyspnea / diffuse moderate lymphohistiocytic interstitial pneumonia and acute bronchitis	Suckling/Nursery	Tissues*	100.0% (3/3)**	NI	USA	Phan et al., 2016
Respiratory disease	NA	Lung homogenate/oral fluid/nasal swab	12.5% (34/271)	NI	USA	Palinski et al., 2017
	Suckling	Lung tissues	26.6% (25/94)	0.0% (0/42)***	China	Qi et al., 2019
Severe respiratory disease	Nursery	Sera	63.7% (51/80)	1.85% (4/216)	China	Zhai et al., 2017
Mild respiratory disease	Nursery	Sera	13.1% (23/175)	1.85% (4/216)	China
Abdominal breathing/lung swelling and congestion	Nursery	Tissues/sera	NA****	NI	China	Shen et al., 2018
Respiratory disease/interstitial pneumonia, suppurative bron‐ chopneumonia, pleuritis and fibrinous‐necrotizing pneumonia	Nursery/growing	Sera	6.2% (8/129)	6.6% (4/60)	Spain	Saporiti, Cruz, et al., 2020
Porcine respiratory disease complex related signs	Growing	Sera	60.0% (15/25)	28.0% (7/25)	Thailand	Kedkovid, Woonwong, Arunorat, Sirisereewan, Sangpratum, Lumyai, et al., 2018
Porcine respiratory disease complex/bronchointerstitial pneumonia	Growing	Lung and lymph node tissues	62.5% (5/8)	NI	Thailand
Respiratory distress/bronchointerstitial pneumonia and infiltrating lymphocytes	Growing	Tissues	100% (2/2)	NI	South Korea	Kim, Park, et al., 2018

NI: not included in the published manuscript; NA: non‐available information in the published manuscript.

*Not specified.

**NGS results.

***The type of samples analyzed in control animals (feces) was different from the ones used in diseased pigs (lung tissues).

****Number of tested samples not included in the published manuscript.