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virus
virus
virus A type of non-cellular ‘organism’ which has no metabolism of its own. It consists mainly or solely of a
nucleic acid genome (
RNA or
DNA) enclosed by
protein; in some cases there is also a
lipoprotein envelope. In order to replicate (multiply), a virus must infect a cell of a suitable host organism where it redirects the host-cell metabolism to manufacture more virus particles. The progeny viruses are released, with or without concomitant destruction of the host cell, and then can infect other cells. All types of organism, from bacteria to humans, are susceptible to infection by viruses; virus infections may be asymptomatic or may lead to more or less severe disease.
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Viruses and their outbreaks
Newspaper article from: New Straits Times; 3/28/2002; ; 700+ words
; ...timeline of computer viruses is at Computer Knowledge's Computer Virus Tutorial Web site at...resident file infector virus - viruses which infect files...evolution of computer viruses, anti- virus programs also sprung...
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 "Post-Tribune (IN)")
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VIRUSES MEDICAL MYSTERY BAFFLES SCIENTISTS
Newspaper article from: Post-Tribune (IN); 4/26/1987; 700+ words
; ...for creation of new viruses are supplied, under...Outside a cell, a virus is helpless. Inside, it can be lethal. "Viruses are the most extreme...manufacturing more viruses. The type of disease caused by a virus depends on which living...
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Virus killers: Macworld Lab tests virus software and survives. (reviews of four antiviral products) (includes related articles on antivirus performance factors and top-rated products) (Software Review) (Evaluation)
Magazine article from: Macworld; 7/1/1994; ; 700+ words
; ...namesakes, computer viruses are relatively easy...With a leading virus-protection software...performance standard for virus detection. At the...Virex, dealing with viruses becomes a virtually...that are similar to viruses in the damage they can cause. Every virus program can scan...
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Viruses Are Most Troublesome Creatures on Earth.
Newspaper article from: Knight Ridder/Tribune Business News; 4/30/2003; 700+ words
; ...some basic facts about viruses: Q: What is a virus? A: It's a tiny...attacked and killed by a virus. Q: What kinds of diseases do viruses cause? A: It depends...wider than the polio virus. Consequently, viruses are harder to detect...
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Viruses, worms, trojans, and bombs. (computer "infections")
Magazine article from: Popular Science; 9/1/1989; ; 700+ words
; ...into memory, and the virus will be noticed. Mac attack Some viruses are relatively benign. For example, a virus that infected Macintosh...a new generation of viruses that modify data without...Here's how one virus works: Once a minute...
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Viruses are still going around. (computer viruses)
Magazine article from: Tape-Disc Business; 6/1/1994; ; 700+ words
; ...about a "killer" virus in the computer industry...while, computer viruses are still around...Robinson explained. Viruses are cross-referenced by type of virus, such as polymorphic...area from which the virus comes. The area...important because viruses are often centralized...
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Techniques against viruses
Newspaper article from: New Straits Times; 12/2/2002; ; 700+ words
; ...software. To most people, viruses and anti-virus techniques are fascinating...signatures to identify these viruses, anti- virus software could use just one...checking. As the complexity of viruses grew, virus writers armed with more experience...
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Viruses: scourge of computer age
News Wire article from: University Wire; 2/25/1998; ; 700+ words
; ...is the one with a virus, the normal recommendations...advances, computer viruses continue to pervade...them, a computer virus can alter or destroy...system. "These viruses usually attack a...you can spread a virus." Individuals with...experience create viruses with a malicious...
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Viruses: The end of the free world as we know it?
Magazine article from: Professional Safety; 8/1/1998; ; 700+ words
; ...feverishly to analyze these viruses and synthesize antidotes. A virus can range from simple...recently, boot-sector viruses accounted for some 80 percent of all virus incidents. However, in recent months, macro viruses, which spread via infected...
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 "Daily News (Los Angeles, CA)")
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VIRUS HUNTERS WEED OUT BUGS.(BUSINESS)
Newspaper article from: Daily News (Los Angeles, CA); 8/19/1996; 700+ words
; ...one-third of viruses are deliberately...destructive. But other virus writers are closer...the craft of the virus hunter. For years, computer viruses spread mainly...today, anti-virus researchers say...detecting six new viruses a day, about...
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Viruses and Responses to Viral Infection
Book article from: World of Microbiology and Immunology
...Finally, some viruses can cause cancer and tumors. One such virus, Human T-cell...This aspect of viruses—that the virus does not appear...and it helps the virus introduce itself...host cell. Many viruses are extremely specific...
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Virus
Encyclopedia entry from: UXL Encyclopedia of Science
...copies of itself, a virus must use the host...The newly made viruses then leave the host...within the organism. Viruses can infect plants...The tobacco mosaic virus, one of the most studied of all viruses, infects tobacco...
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Viruses
Book article from: Animal Sciences
...on their own, viruses must force bacteria...work for them. A virus is, simply put...detection is one of a virus's main tasks, and viruses may rely on dummy...Once docked, the virus must get its nucleic...the cell. Some viruses are taken entirely...
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Latent Viruses and Diseases
Book article from: World of Microbiology and Immunology
...material, the virus becomes effectively...host. Latent viruses usually contain...manufacture of new virus begins. Bacteriophage...However, other viruses that can establish...Examples of viruses include the Herpes Simplex Virus 1 (also dubbed...
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Plant Viruses
Book article from: World of Microbiology and Immunology
...manufacture new virus particles. Plant viruses do not infect just...the known plant viruses contain ribonucleic acid (RNA ). In a virus known as the wound...Also as with other viruses, the shape of any particular virus is characteristic...
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