Molecular Epidemiology of Animal Virus Diseases

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Abstract
In this review the application of methods of molecular epidemiology, particularly the combined approach of amplifying defined fragments of viral genomes using the polymerase chain reaction and subsequent nucleotide sequencing analysis, is described. Emphasis is put on examples of a few important diseases (e.g. those caused by morbilliviruses, rhabdoviruses, pestiviruses and aphthoviruses) to demonstrate the impact of this methodology. Molecular epidemiology is already an important and very sensitive tool to study the evolution of viruses at a level superior to previous methodologies and providing a better understanding of epidemiological relationships.