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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Latest Virus News and Research

Newer form of SARS-CoV-2 coronavirus dominates global infections

Newer form of SARS-CoV-2 coronavirus dominates global infections

Survey reveals significant mental health impact during COVID-19 pandemic

Survey reveals significant mental health impact during COVID-19 pandemic

Study shows oropharyngeal secretions as alternative for COVID-19 detection

Study shows oropharyngeal secretions as alternative for COVID-19 detection

New study supports a causal relation of SARS-CoV-2 with COVID toes

New study supports a causal relation of SARS-CoV-2 with COVID toes

Researchers investigate decision-making processes implemented by Swiss government during COVID-19 crisis

Researchers investigate decision-making processes implemented by Swiss government during COVID-19 crisis

Researchers identify mosquito species that could transmit malaria

Researchers identify mosquito species that could transmit malaria

ACTIV group assesses controlled human infection models for developing SARS-CoV-2 vaccine

ACTIV group assesses controlled human infection models for developing SARS-CoV-2 vaccine

Structure of the full SARS-CoV-2 RNA genome in infected cells

Structure of the full SARS-CoV-2 RNA genome in infected cells

SARS-CoV-2 infection modeling in iPSC-derived type 2 cells

SARS-CoV-2 infection modeling in iPSC-derived type 2 cells

Novavax SARS-CoV-2 vaccine candidate shows promise in animal models

Novavax SARS-CoV-2 vaccine candidate shows promise in animal models

Repurposed drug for acute lung injury in COVID-19

Repurposed drug for acute lung injury in COVID-19

How lockdown stopped the virus in Italy

How lockdown stopped the virus in Italy

Coronavirus immunity is higher than previously thought, study finds

Coronavirus immunity is higher than previously thought, study finds

Scientists find coronavirus' Achilles' heel

Scientists find coronavirus' Achilles' heel

Which facemasks work best at stopping coronavirus?

Which facemasks work best at stopping coronavirus?

Jugular venous pressure of heart failure patients can be checked remotely via smartphone video app

Jugular venous pressure of heart failure patients can be checked remotely via smartphone video app

New tool to increase accessibility for COVID-19 testing

New tool to increase accessibility for COVID-19 testing

UofM/UTHSC grant competition yields 23 projects addressing COVID-19

UofM/UTHSC grant competition yields 23 projects addressing COVID-19

More than one-third of excess deaths in pandemic's early months linked to other causes

More than one-third of excess deaths in pandemic's early months linked to other causes

CityU develops CRISPR-assisted method to identify RNA-binding proteins in living cells

CityU develops CRISPR-assisted method to identify RNA-binding proteins in living cells