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.

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Overview

Feature Articles

Latest Virus News and Research

Africa CDC and WHO strengthen mpox response with updated strategy

Africa CDC and WHO strengthen mpox response with updated strategy

Public ignorance and apathy towards bird flu could hinder preventive efforts

Public ignorance and apathy towards bird flu could hinder preventive efforts

Legal challenge puts ACA’s preventive health services in jeopardy

Legal challenge puts ACA’s preventive health services in jeopardy

Vaccine trial shows promise for saving California condors from bird flu

Vaccine trial shows promise for saving California condors from bird flu

Experimental bird flu vaccine offers strong protection in preclinical trials

Experimental bird flu vaccine offers strong protection in preclinical trials

Beyond Ivy League, RFK Jr.’s NIH slashed science funding across states that backed Trump

Beyond Ivy League, RFK Jr.’s NIH slashed science funding across states that backed Trump

RFK Jr. struggles to navigate frustrated supporters and a demanding boss

RFK Jr. struggles to navigate frustrated supporters and a demanding boss

Dr. Hayre warns of mental health crisis for children after COVID-19

Dr. Hayre warns of mental health crisis for children after COVID-19

Climate change poses global risk to safe blood supply

Climate change poses global risk to safe blood supply

Study reveals a potential breakthrough in treating osteonecrosis of the femoral head

Study reveals a potential breakthrough in treating osteonecrosis of the femoral head

Why measles is back in the U.S. and what doctors must know now

Why measles is back in the U.S. and what doctors must know now

RSV-associated infections linked to higher one year mortality in adults

RSV-associated infections linked to higher one year mortality in adults

Understanding the complex spectrum of Castleman disease

Understanding the complex spectrum of Castleman disease

Africa faces growing mpox threat amid foreign aid reductions

Africa faces growing mpox threat amid foreign aid reductions

Refining the diagnosis of large granular lymphocytic leukemias and their mimics

Refining the diagnosis of large granular lymphocytic leukemias and their mimics

Unlocking the power of MDA5 protein modifications in antiviral defense

Unlocking the power of MDA5 protein modifications in antiviral defense

Trump’s immigration tactics obstruct efforts to avert bird flu pandemic, researchers say

Trump’s immigration tactics obstruct efforts to avert bird flu pandemic, researchers say

New quinoline-based antiviral shows strong promise against SARS-CoV-2

New quinoline-based antiviral shows strong promise against SARS-CoV-2

Study shows wisdom of early US investment in COVID-19 vaccines

Study shows wisdom of early US investment in COVID-19 vaccines

Research describes blood disorders and their impact on Ebola patient outcomes

Research describes blood disorders and their impact on Ebola patient outcomes

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