Virus

Information on COVID-19, the infectious disease caused by the most recently discovered coronavirus.

Virus - Virus - The protein capsid: The protein capsid provides the second major criterion for the classification of viruses. The capsid surrounds the virus and is composed of a finite number of protein subunits known as capsomeres, which usually associate with, or are found close to, the virion nucleic acid. There are two major classes of viruses based on the protein capsid: (1) those in

Everything you need to know about the coronavirus in the US and around the world. Includes latest news on symptoms, cases, treatments and more.

The Oregon Health Authority is responding to an outbreak of respiratory illness, called COVID-19, caused by a novel (new) coronavirus. Health officials urge good hand hygiene, covering coughs and staying …

The Oregon Health Authority is responding to an outbreak of respiratory illness, called COVID-19, caused by a novel (new) coronavirus. Health officials urge good hand hygiene, covering coughs and staying …

“A minimal virus is a parasite that requires replication (making more copies of itself) in a host cell,” said Jaquelin Dudley, a professor of molecular biosciences at the University of Texas

A virus is a tiny infectious agent that reproduces inside the cells of living hosts.When infected, the host cell is forced to rapidly produce thousands of identical copies of the original virus. Unlike most living things, viruses do not have cells that divide; new viruses assemble in the infected host cell.But unlike simpler infectious agents like prions, they contain genes, which allow them

A virus is a microscopic parasite that can infect living organisms and cause disease. It can make copies of itself inside another organisms cells. Viruses consist of nucleic acid and a protein coat. Usually the nucleic acid is RNA; sometimes it is DNA.Viruses are able to cause many types of diseases, such as polio, ebola and hepatitis. Virology is the study of viruses.

The virus that causes COVID-19 is thought to spread from close contact (i.e., within about 6 feet) with a person who is infected with the virus. The virus spreads primarily through respiratory droplets produced when an infected person coughs, sneezes, or talks. This type of spread is not a concern after death.

Virus, infectious agent of small size and simple composition that can multiply only in living cells of animals, plants, or bacteria. Viruses possess unique infective properties and thus often cause disease …

COVID-19 is a respiratory condition caused by a coronavirus. Some people are infected but don’t notice any symptoms. Most people will have mild symptoms and get better on their own. But about 1

Virus definition, an ultramicroscopic (20 to 300 nanometers in diameter), metabolically inert, infectious agent that replicates only within the cells of living hosts, mainly bacteria, plants, and animals: composed of an RNA or DNA core, a protein coat, and, in more complex types, a surrounding envelope. See more.