Lumpy skin disease: a systematic review of mode of transmission, risk of emergence, and risk entry pathways.

Lumpy skin disease (LSD), a viral disease of cattle, can be acute, subacute, or inactive. It is distinguished by fever and the abrupt emergence of firm, confined cutaneous nodules that usually necrotize. Similar lesions may occur in the skeletal muscles and the mucosae of the digestive and respiratory tracts.