Virus

A virus is a microscopic infectious agent that can reproduce only inside a host cell. Viruses infect all types of organisms: from animals and plants, to bacteria and archaea. Since the initial discovery of tobacco mosaic virus by Martinus Beijerinck in 1898, more than 5,000 types of virus have been described in detail, although most types of virus remain undiscovered. Viruses are ubiquitous, as they are found in almost every ecosystem on Earth, and are the most abundant type of biological entity on the planet. The study of viruses is known as virology, and is a branch of microbiology.
What is a Virus?

A virus is a small infectious agent that can only replicate inside the cells of another organism. The word is from the Latin ''virus'' referring to poison and other noxious substances, first used in English in 1392. ''Virulent'', from Latin ''virulentus'' (poisonous), dates to 1400. A meaning of "agent that causes infectious disease" is first recorded in 1728, The term ''virion'' is also used to refer to a single infective viral particle. The plural is "viruses".

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Overview

Feature Articles

Latest Virus News and Research

The role of micro-RNA in SARS-CoV-2 infection and COVID-19

The role of micro-RNA in SARS-CoV-2 infection and COVID-19

Scientists show SARS-CoV-2's viral replication with 3D integrative imaging

Scientists show SARS-CoV-2's viral replication with 3D integrative imaging

For nurses feeling the strain of the pandemic, virus resurgence is ‘paralyzing’

For nurses feeling the strain of the pandemic, virus resurgence is ‘paralyzing’

Aprotinin inhibits SARS-CoV-2 entry and replication in cells cultures

Aprotinin inhibits SARS-CoV-2 entry and replication in cells cultures

Technology used for screening liquids can be adapted to provide rapid COVID-19 testing

Technology used for screening liquids can be adapted to provide rapid COVID-19 testing

SARS-CoV-2's RNA folding structures are potential therapeutic targets, study finds

SARS-CoV-2's RNA folding structures are potential therapeutic targets, study finds

Researchers recommend antibody cocktail to tackle SARS-CoV-2 mutations

Researchers recommend antibody cocktail to tackle SARS-CoV-2 mutations

New A.I. is fast and accurate at detecting COVID-19 from chest X-rays

New A.I. is fast and accurate at detecting COVID-19 from chest X-rays

Biosensor assay SARS-CoV-2 antibody test may predict COVID-19 severity in patients

Biosensor assay SARS-CoV-2 antibody test may predict COVID-19 severity in patients

New therapy developed for flu infections may also prove effective against HIV, COVID-19

New therapy developed for flu infections may also prove effective against HIV, COVID-19

Avacta Group announces significant progress in the development of SARS-CoV-2 rapid antigen test

Avacta Group announces significant progress in the development of SARS-CoV-2 rapid antigen test

Research links SARS-CoV-2 prevalence, hospital surfaces and patient microbiomes

Research links SARS-CoV-2 prevalence, hospital surfaces and patient microbiomes

Study sheds new light on impact of COVID-19 in pediatric population

Study sheds new light on impact of COVID-19 in pediatric population

Mauritian Prime Minister calls upon world leaders to ensure fair distribution of Covid-19 vaccines

Mauritian Prime Minister calls upon world leaders to ensure fair distribution of Covid-19 vaccines

Research provides key information on transmission, development of mutations in SARS-CoV-2 virus

Research provides key information on transmission, development of mutations in SARS-CoV-2 virus

COVID-19 study underscores the importance of protection guidelines based on fluid dynamics research

COVID-19 study underscores the importance of protection guidelines based on fluid dynamics research

New zinc oxide surface kills airborne viruses and bacteria

New zinc oxide surface kills airborne viruses and bacteria

SARS-CoV-2 RNA best preserved in wastewater under freezing conditions

SARS-CoV-2 RNA best preserved in wastewater under freezing conditions

Study: Aprotinin can inhibit virus replication by preventing SARS-CoV2 entry into host cells

Study: Aprotinin can inhibit virus replication by preventing SARS-CoV2 entry into host cells

COVID-19: HLA class I genotypes and mortality

COVID-19: HLA class I genotypes and mortality