Most acute: mortality can be as high as 100% within the first week of infection. This presentation is triggered by highly virulent strains and sudden death is common. The disease progresses rapidly and most pigs do not show clinical signs until they die.　　

Acute: Its a common form of ASFV outbreak. Mortality is as high as 100%, but disease progression is slower than in the most acute form, and it may take up to 3 weeks before mortality reaches 100%. The clinical symptoms observed are distinct and severe. More specifically, fever, generalized hemorrhagic skin lesions in pigs, respiratory distress, and hemorrhagic nasal discharge are seen before the animal dies. At necropsy, hemorrhagic lesions in several organs were visible, and enlargement of the kidneys, lymph nodes, and spleen was common, but these lesions were not observed in all infected pigs.　　

Subacute: Clinical signs are similar to those of acute symptoms but less severe. Mortality can reach 30-70% within 3-4 weeks of infection. Disease progression is significantly slower than in acute episodes, and clinical symptoms may not be as pronounced as expected.　　

Chronic: Clinical symptoms are varied and may include loss of appetite, weight loss, bloody diarrhea, respiratory distress, and arthritis. Mortality remains below 20%, with most animals surviving and becoming vectors of the virus over the next few months.