Figure 3.

Chronic CSFV infection. The incubation period is the same as with the acute course. However, it may take up to a month until they are truly recognized. Atypical clinical signs can be present throughout and until death, occurring up to three months or even later after the infection. Antibodies can be detected at low levels after two weeks or later but do usually not persist. Viral shedding is observed from about four days post infection till the death of the animal. (a) Pigs are depressed, hunched over, and anorexic; (b) pig with petechial bleedings and ecchymosis in the anogenital region; (c) stunted and wasting pig beside a normally developed one of the same age; and (d) pig with diarrhea, shedding high viral loads until death.