Swine Vesicular Disease Virus (SVDV)
SVDV is a member of the family Picornaviridae, genus Enterovirus. Virion properties of SVDV are similar to those of FMDV as both viruses belong to the same family. An important difference between SVDV and FMDV is the stability at low pH; such difference has been used as a factor in the classification of a new picornaviruses. Aphthoviruses (FMDV) are unstable below pH 7, the enteroviruses (SVDV) are stable at pH 3.
Swine vesicular disease (SVD) is a contagious disease of pigs, caused by an enterovirus and characterised by vesicles on the coronary band, heels of the feet and occasionally on the lips, tongue, snout and teats. Strains of SVDV vary in virulence, and the disease may be subclinical, mild or severe, the latter usually is only seen when pigs are housed on concrete in damp conditions. Swine vesicular disease was first recognized in Italy in 1966 and since 1972 has been reported sporadically in many other European and Asian countries.
It is not an economically important disease, but it must be controlled so that diagnostic confusion with FMD can be avoided. For this reason, SVD is a notifiable disease, and most countries have elected to eliminate the virus by a slaughter program, although this may be difficult.
Incubation period of SVDV is 2-7 days.
Hosts are pigs and humans (laboratory personnel may seroconvert). SVD is classified as an OIE List A disease.
More information about SVDV can be obtained:
[ CSFV |
ASFV |
PRRSV |
ADV |
SVDV |
FMDV |
VSV ]
