Table 1 Characteristics of the four manifestations of an infection with the African swine fever virus
From: African and classical swine fever: similarities, differences and epidemiological consequences
| Â | Peracute form | Acute form | Subacute form | Chronic form |
|---|---|---|---|---|
Virulence | High | High/moderate | Moderate | Low |
Clinical signs | High fever, appetite loss, lethargy, hyperpnoe | High fever, appetite loss, lethargy, gastro-intestinal signs | See acute form but less pronounced | Respiratory signs, lameness |
Pathology | Erythema | Erythema, petechial haemorrhages in several organs, lung oedema, abortion | Erythema, petechial haemorrhages in several organs, haemorrhagic lymph nodes, abortion | Arthritis, necrotic skin, pneumonia, pericarditis, abortion |
Mortality | High | High | Variable | Low |