TAXONOMY OF VIRUSES

TAXONOMY OF VIRUSES - ales A viral species is a group of...

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TAXONOMY OF VIRUSES Viral classification is needed for the same reasons we need to classify bacteria and other  organisms, but a perfect system that fits all needs has yet to be developed. Early classification  sorted out viruses based on the symptoms they produced. Since this can vary, this system was not  satisfactory, especially as more and more viruses were discovered. In 1966 the International  Committee on the Taxonomy of Viruses was formed. As the system now operates, here are the  main features:    1. Viruses are grouped into families based on:       a. Nucleic acid type      b. Strategy for replication       c. Morphology 2. Genus names end in --- virus 3. Family names end in --- viridae 4. Order names end in ---
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Unformatted text preview: ales A viral species is a group of viruses sharing the same genetic information and ecological niche. Species are designated by descriptive common names (such as human immunodeficiency virus [HIV]) , and if there are subspecies they are designated by a number (HIV-1). Table 13.2 P. 3782- 383 is a summary of the classification of viruses that infect humans. ISOLATION, CULTIVATION, AND IDENTIFICATION OF VIRUSES Viruses grow only in living cells, so regular lab media are not suitable. This plus the fact that many viruses are host specific complicates the job of cultivating viruses. The viruses that grow in bacteria (bacteriophages) are the ones that have been studied the most....
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TAXONOMY OF VIRUSES - ales A viral species is a group of...

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