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

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Latest Virus News and Research

Natural products a rich source for novel antiviral compounds

Natural products a rich source for novel antiviral compounds

Lab reports 1st instance of SARS-CoV-2 variants affecting antigen test performance

Lab reports 1st instance of SARS-CoV-2 variants affecting antigen test performance

3D printing technique extends the possibilities of lateral flow tests

3D printing technique extends the possibilities of lateral flow tests

New spray protocol improves delivery of nasal antiseptic to reduce COVID-19 infection

New spray protocol improves delivery of nasal antiseptic to reduce COVID-19 infection

New vaccine shows potential to protect from a variety of coronavirus infections

New vaccine shows potential to protect from a variety of coronavirus infections

Researchers improve method to inhibit viruses that cause childhood respiratory infections

Researchers improve method to inhibit viruses that cause childhood respiratory infections

Research suggests Pfizer-BioNTech COVID-19 vaccine reprograms innate immune responses

Research suggests Pfizer-BioNTech COVID-19 vaccine reprograms innate immune responses

Scientists produce a universal flu vaccine using nanoparticles to induce long-lasting immunity

Scientists produce a universal flu vaccine using nanoparticles to induce long-lasting immunity

Cardiac complications found to be rare in college athletes who contracted COVID-19

Cardiac complications found to be rare in college athletes who contracted COVID-19

Researchers show SARS-CoV-2 genes can be integrated into the human genome

Researchers show SARS-CoV-2 genes can be integrated into the human genome

Preclinical study finds sex differences in neurological response to SARS-CoV-2 infection

Preclinical study finds sex differences in neurological response to SARS-CoV-2 infection

New nanoimmunoassay can detect anti–SARS-CoV-2 antibodies in ultralow-volume blood samples

New nanoimmunoassay can detect anti–SARS-CoV-2 antibodies in ultralow-volume blood samples

How schools can help kids heal after the pandemic’s uncertainty

How schools can help kids heal after the pandemic’s uncertainty

Prevalence of SARS-CoV-2 antibodies in Germany

Prevalence of SARS-CoV-2 antibodies in Germany

Total COVID-19 deaths could be 7 million

Total COVID-19 deaths could be 7 million

Combo COVID-flu vaccine protects against current and emerging variants in animal model

Combo COVID-flu vaccine protects against current and emerging variants in animal model

Targeted methods to control spread of SARS-CoV-2 without resorting to lockdowns

Targeted methods to control spread of SARS-CoV-2 without resorting to lockdowns

SARS-CoV-2 main protease conformations are temperature-dependent

SARS-CoV-2 main protease conformations are temperature-dependent

Is COVID-19 a new disease?

Is COVID-19 a new disease?

Mild Covid-19 infection not likely to cause lasting damage to structure or function of the heart

Mild Covid-19 infection not likely to cause lasting damage to structure or function of the heart