The end of the incubation period is followed by a marked
phase of pyrexia, anorexia and lethargy
Pigs are extremely lame, are reluctant to move and adopt
a hunched gait if forced to stand
The severity of lesions on the limbs depends on the
conditions under which the the pigs are kept. Lesions are pronounced
in animals kept on hard floors
Vesicular lesions appear rapidly on the snout, mouth,
coronary band, accessory digits and possibly the pressure points on
the limbs
Mortality in unweaned piglets due to myocarditis can
be up to 100% and can precede any other signs of the disease (for
example, vesicles on the teats of lactating sows)
Lesions age at a rate similar to that in cattle
Lesions are frequently subject to secondary infection
