An international system of classification and nomenclature of all viruses is badly needed and there have been many schemes put forward, but only those most generally accepted by virologists are dealt with here. It is important to differentiate, at the start, between classification and nomenclature, since some virologists tend to treat them as being one and the same. These are the two major fields of systematics. Classification is the process of establishing and defining systematic groupings; nomenclature is the allocation of names to the groups so produced. The classificatory work must be completed first; only when this is achieved, on the basis of available information, can the correct names be ascertained for the groups thus established (Jeffrey, 1973).
KeywordsType Species Yellow Fever Virus Insect Virus Granulosis Virus Iridescent Virus
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