Viruses are classified by phenotypic characteristics, such as morphology, nucleic acid type, mode of replication, host organisms, and the type of disease they cause.

In addition to biologic classification, viruses often are categorized according to their mode of transmission. Box 201-1 lists the major routes of transmission in humans, with representative …

Feb 4, 2023 · Viruses range from the structurally simple and small parvoviruses and picornaviruses to the large and complex poxviruses and herpesviruses. Viruses are classified on the basis of …

Classification of viruses is based on the collection and comparison of various characters that describe the virus, and can then be used to distinguish one virus from another.

Viruses contain only a few elements by which they can be classified: the viral genome, the type of capsid, and the envelope structure for the enveloped viruses.

Viruses are classified in several ways: by factors such as their core content, the structure of their capsids, and whether they have an outer envelope. Viruses may use either DNA or RNA as their …

Classification of viruses can be approached through their morphology or the structure and replication strategy of their genomes, leading to the Baltimore classification system, which divides viruses into …