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

What does approval of the Pfizer vaccine for teens and preteens mean for my child?

What does approval of the Pfizer vaccine for teens and preteens mean for my child?

UCL scientists identify new immunotherapy to combat hepatitis B virus

UCL scientists identify new immunotherapy to combat hepatitis B virus

Unique pre-clinical model enables study of HIV infection and testing of new therapies

Unique pre-clinical model enables study of HIV infection and testing of new therapies

Supercarriers: Just 2% of SARS-CoV-2 positive people carry 90% of the virus

Supercarriers: Just 2% of SARS-CoV-2 positive people carry 90% of the virus

A look at how coronavirus disease (COVID-19) affects Parkinson's

A look at how coronavirus disease (COVID-19) affects Parkinson's

A SARS-CoV-2 ferritin nanoparticle vaccine elicits broad immunity

A SARS-CoV-2 ferritin nanoparticle vaccine elicits broad immunity

A magnetofluidic platform for SARS-CoV-2 variant and respiratory pathogen detection

A magnetofluidic platform for SARS-CoV-2 variant and respiratory pathogen detection

Three-way strategy employed by SARS-CoV-2 during infection

Three-way strategy employed by SARS-CoV-2 during infection

Antibodies generated by malaria cross-react with SARS-CoV-2

Antibodies generated by malaria cross-react with SARS-CoV-2

UCLA Health wins $750,000 grant to scale COVID-19 innovations and support health equity

UCLA Health wins $750,000 grant to scale COVID-19 innovations and support health equity

Single dose of Oxford-AstraZeneca vaccine protective in previously infected recipients, suggests study

Single dose of Oxford-AstraZeneca vaccine protective in previously infected recipients, suggests study

Phosphatidic acid is a key common substrate for hepatitis C and SARS-CoV-2 replication

Phosphatidic acid is a key common substrate for hepatitis C and SARS-CoV-2 replication

High-density microarray patch could help vaccinate for dengue in a single click

High-density microarray patch could help vaccinate for dengue in a single click

Designer SARS-CoV-2 RBD vaccine produces dramatically improved antibody response in preclinical trials

Designer SARS-CoV-2 RBD vaccine produces dramatically improved antibody response in preclinical trials

South Australian immunologist receives $3 million to accelerate work on Covid-19 vaccine

South Australian immunologist receives $3 million to accelerate work on Covid-19 vaccine

Huge healthcare burden of post-COVID-19 symptoms likely, suggests new study

Huge healthcare burden of post-COVID-19 symptoms likely, suggests new study

Another pandemic ‘to do’ on the list for schools: Contact tracing

Another pandemic ‘to do’ on the list for schools: Contact tracing

Study reports new monoclonal antibodies with broad neutralizing capabilities against betacoronaviruses (including SARS-CoV-2)

Study reports new monoclonal antibodies with broad neutralizing capabilities against betacoronaviruses (including SARS-CoV-2)

No placental damage observed in case study of pregnant women with mRNA COVID-19 vaccinations

No placental damage observed in case study of pregnant women with mRNA COVID-19 vaccinations

Black fungus complicates India's COVID pandemic

Black fungus complicates India's COVID pandemic