Detection and genetic characterization of enteric viruses in diarrhoea outbreaks from swine farms in Spain

Table 1 Main characteristics of porcine enteric viruses with well-recognized or unclear involvement in the etiology of diarrhoea outbreaks on swine farms

Virus	Genus	Family	Enveloped virus	Viral genome structure	Genome size (Kb)	Identified in swine samples
Well-recognized viruses responsible for diarrhoea outbreaks on swine farms
PEDV	Alphacoronavirus	Coronaviridae	Yes	RNA single-stranded positive sense	28–30	[2, 58, 72]
TGEV	Alphacoronavirus	Coronaviridae	Yes	RNA single-stranded positive sense	28–30	[72,73,74]
SeCoV	Alphacoronavirus	Coronaviridae	Yes	RNA single-stranded positive sense	28–30	[7,8,9,10]
PDCoV	Deltacoronavirus	Coronaviridae	Yes	RNA single-stranded positive sense	28–30	[12, 75, 76]
SADS	Alphacoronavirus	Coronaviridae	Yes	RNA single-stranded positive sense	28–30	[13, 14, 77,78,79]
RVA	Rotavirus	Sedoreoviridae	No	RNA double-stranded segmented (11)	18–19	[3, 80, 81]
RVC	Rotavirus	Sedoreoviridae	No	RNA double-stranded segmented (11)	18–19	[3, 80, 82]
Enteric viruses with an unclear role in diarrhoea outbreaks on swine farms
PAstV	Astrovirus	Astroviridae	No	RNA single-stranded positive sense	6.4–7.3	[15,16,17,18,19,20]
PKoV	Kobuvirus	Picornaviridae	No	RNA single-stranded positive sense	8.2–8.3	[16, 21,22,23,24]
PToV	Torovirus	Tobaniviridae	Yes	RNA single-stranded positive sense	25–30	[25,26,27,28,29]
MRV	Orthoreovirus	Spinareoviridae	No	RNA double-stranded segmented (10)	23–24	[30,31,32,33,34]
PAdV	Mastadenovirus	Adenoviridae	No	DNA double-stranded lineal	32–34	[1, 35,36,37]

MRV: Mammalian orthoreovirus, PAdV: Porcine mastadenovirus, PAstV: Porcine astrovirus, PEDV: Porcine epidemic diarrhoea virus, PDCoV: Porcine deltacoronavirus, PKoV: Porcine kobuvirus, PToV: Porcine torovirus, RVA: Rotavirus A, RVC: Rotavirus C, SADS: Swine acute diarrhoea syndrome coronavirus, SeCoV: Swine enteric coronavirus, TGEV: Transmissible gastroenteritis virus

ISSN: 2055-5660