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

Study shows antibody responses persisting 10 months after SARS-CoV-2 infection

Study shows antibody responses persisting 10 months after SARS-CoV-2 infection

SARS-CoV-2 does not infect the entire body in the same way, finds study

SARS-CoV-2 does not infect the entire body in the same way, finds study

A machine-learning approach to track how yellow fever mosquito moves through the environment

A machine-learning approach to track how yellow fever mosquito moves through the environment

Household odorant smell tests could help detect COVID-19, say study

Household odorant smell tests could help detect COVID-19, say study

Risk models for West Nile Fever may predict areas of future outbreaks a year in advance

Risk models for West Nile Fever may predict areas of future outbreaks a year in advance

GW team to play a role in Sanofi COVID-19 vaccine clinical trial

GW team to play a role in Sanofi COVID-19 vaccine clinical trial

Researchers explore how N501Y mutation in SARS-CoV-2 increases viral transmissibility

Researchers explore how N501Y mutation in SARS-CoV-2 increases viral transmissibility

Corticosteroid receptor inhibitor shows anti-SARS-CoV-2 activity in vivo

Corticosteroid receptor inhibitor shows anti-SARS-CoV-2 activity in vivo

College students forced to relocate during COVID-19 pandemic are more likely to have depression

College students forced to relocate during COVID-19 pandemic are more likely to have depression

Exhaled breath from infected people can spread COVID-19

Exhaled breath from infected people can spread COVID-19

SARS-CoV-2 variants emerge during humoral immunity phase of acute COVID-19

SARS-CoV-2 variants emerge during humoral immunity phase of acute COVID-19

Two potent SARS-CoV-2 neutralizing antibodies effective against B.1.351 and B.1.1.7 variants

Two potent SARS-CoV-2 neutralizing antibodies effective against B.1.351 and B.1.1.7 variants

TBE patients continue to be affected by long-term problems

TBE patients continue to be affected by long-term problems

Largescale antibody testing could lower the scale of COVID-19 pandemic

Largescale antibody testing could lower the scale of COVID-19 pandemic

Research predicts which mammal species can spread SARS-CoV-2

Research predicts which mammal species can spread SARS-CoV-2

Phase 1 clinical trial shows promising results for monoclonal antibodies against MERS coronavirus

Phase 1 clinical trial shows promising results for monoclonal antibodies against MERS coronavirus

Key mutation sites in the SARS-CoV-2 spike protein modulate antibody and ACE2 affinity

Key mutation sites in the SARS-CoV-2 spike protein modulate antibody and ACE2 affinity

Innate immune system overreacts in patients with severe COVID-19

Innate immune system overreacts in patients with severe COVID-19

SARS-CoV-2 mutations allow escape from clinical monoclonal antibodies

SARS-CoV-2 mutations allow escape from clinical monoclonal antibodies

GSK-3 inhibitors show promise in treating coronavirus infections

GSK-3 inhibitors show promise in treating coronavirus infections