TY - CHAP M1 - Book, Section TI - Classification of Medically Important Viruses A1 - Levinson, Warren A1 - Chin-Hong, Peter A1 - Joyce, Elizabeth A. A1 - Nussbaum, Jesse A1 - Schwartz, Brian PY - 2020 T2 - Review of Medical Microbiology & Immunology: A Guide to Clinical Infectious Diseases, 16e AB - The classification of viruses is based on chemical and morphologic criteria. The two major components of the virus used in classification are (1) the nucleic acid (its molecular weight and structure) and (2) the capsid (its size and symmetry and whether it is enveloped). A classification scheme based on these factors is presented in Tables 31–1 and 31–2 for DNA and RNA viruses, respectively. This scheme was simplified from the complete classification to emphasize organisms of medical importance. Only the virus families are listed; subfamilies are described in the chapter on the specific virus. Figures 31–1 and 31–2 show a classification outline for DNA viruses and RNA viruses, respectively, based on the type of genome, the nature of the nucleocapsid, and whether an envelope is present. SN - PB - McGraw Hill CY - New York, NY Y2 - 2024/03/28 UR - accessmedicine.mhmedical.com/content.aspx?aid=1171928070 ER -