Approaches to define the viral genetic basis of classical swine fever virus virulence.

Leifer, Immanuel; Ruggli, Nicolas; Blome, Sandra (2013). Approaches to define the viral genetic basis of classical swine fever virus virulence. Virology, 438(2), pp. 51-55. Academic Press 10.1016/j.virol.2013.01.013

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Classical swine fever (CSF), a highly contagious disease of pigs caused by the classical swine fever virus (CSFV), can lead to important economic losses in the pig industry. Numerous CSFV isolates with various degrees of virulence have been isolated worldwide, ranging from low virulent strains that do not result in any apparent clinical signs to highly virulent strains that cause a severe peracute hemorrhagic fever with nearly 100% mortality. Knowledge of the molecular determinants of CSFV virulence is an important issue for effective disease control and development of safe and effective marker vaccines. In this review, the latest studies in the field of CSFV virulence are discussed. The topic of virulence is addressed from different angles; nonconventional approaches like codon pair usage and quasispecies are considered. Future research approaches in the field of CSFV virulence are proposed.

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