Baltimore Classification System

(noun)

The Baltimore classification, developed by David Baltimore, is a virus classification system that groups viruses into families, depending on their type of genome (DNA, RNA, single-stranded (ss), double-stranded (ds), etc.) and their method of replication.

Related Terms

Examples of Baltimore Classification System in the following topics:

  • The Baltimore Virus Classification

    • The Baltimore classification groups viruses into families depending on their type of genome.
    • Virus classification is the process of naming viruses and placing them into a taxonomic system.
    • Much like the classification systems used for cellular organisms, virus classification is the subject of ongoing debate and proposals.
    • Baltimore classification (first defined in 1971) is a classification system that places viruses into one of seven groups depending on a combination of their nucleic acid (DNA or RNA), strandedness (single-stranded or double-stranded), Sense, and method of replication .
    • List the characteristics of viruses that are useful for Baltimore classification

  • RNA Oncogenic Viruses

    • RNA viruses are classified based on the Baltimore classification system and do not take into account viruses with DNA intermediates in their life cycle.

  • Nongenetic Categories for Medicine and Ecology

    • Similar to the classification systems used for cellular organisms, virus classification is the subject of ongoing debate due to their pseudo-living nature.
    • Essentially, they are non-living particles with some chemical characteristics similar to those of life; thus, they do not fit neatly into an established biological classification system.
    • Currently there are two main schemes used for the classification of viruses: (1) the International Committee on Taxonomy of Viruses (ICTV) system; and (2) the Baltimore classification system, which places viruses into one of seven groups.
    • Baltimore classification is a system that places viruses into one of seven groups depending on a combination of:
    • Other classifications are determined by the disease caused by the virus or its morphology, neither of which is satisfactory as different viruses can either cause the same disease or look very similar.

  • Plant DNA Viruses

    • DNA viruses belong to either Group I (double-stranded DNA; dsDNA) or Group II (single-stranded DNA; ssDNA) of the Baltimore classification system for viruses.

  • Viral Identification

    • The Baltimore classification developed by David Baltimore is a virus classification system that groups viruses into families, depending on their type of genome (DNA, RNA, single-stranded (ss), double-stranded (ds), etc.) and their method of replication.
    • An example of Baltimore Virus classification I: dsDNA virusesII: ssDNA virusesIII: dsRNA virusesIV: (+)ssRNA virusesV: (−)ssRNA virusesVI: ssRNA-RT virusesVII: dsDNA-RT viruses

  • The Taxonomic Scheme

    • Bacterial taxonomy is the rank-based classification of bacteria.
    • In the scientific classification established by Carl von Linné, each distinct species is assigned to a genus using a two-part binary name (for example, Homo sapiens).
    • Despite there being little agreement on the major subgroups of the Bacteria, gram staining results were commonly used as a classification tool.
    • Major groups of this system include: Gracilicutes (gram negative); Firmacutes (gram positive); Mollicutes (gram variable, e.g.
    • Outline the factors that play a role in the classification of bacterial taxonomy

  • Viral Replication and Gene Expression

    • RNA viruses are classified into distinct groups depending on their genome and mode of replication (and the numerical groups based on the older Baltimore classification).

  • Double-Stranded DNA Bacteriophages

    • Under the Baltimore classification scheme, the Caudovirales are group I viruses as they have double-stranded DNA (dsDNA) genomes, which can be anywhere from 18,000 base pairs to 500,000 base pairs in length.
    • This classification scheme was originated by Bradley in 1969 and has since been extended.

  • Disease Severity and Duration

    • Severity of illness is defined as the extent of organ system derangement or physiologic decompensation of a patient.
    • A systemic disease is a disease that affects the entire body, such as influenza or high blood pressure.
    • Such categories can include a set of similar diseases.The International Classification of Diseases is published by the World Health Organization (WHO) and is used worldwide for morbidity and mortality statistics, reimbursement systems, and automated decision support in health care.
    • This system is designed to promote international comparability in the collection, processing, classification, and presentation of these statistics.
    • The ICD is a core classification of the WHO Family of International Classifications (WHO-FIC).

  • HIV and AIDS

    • Two main clinical staging systems are used to classify HIV and HIV-related disease for surveillance purposes: the WHO disease staging system for HIV infection and disease, and the CDC classification system for HIV infection.
    • The CDC's classification system is more frequently adopted in developed countries.
    • Since then, the WHO classification has been updated and expanded several times, with the most recent version being published in 2007.
    • The WHO system uses the following categories:
    • The United States Center for Disease Control and Prevention also created a classification system for HIV, and updated it in 2008.