Oct 18, 2010 – Antigenic shift is due to reassortment. In the case of influenza A, antigenic shift periodically occurs. Apparently "new" HA and/or NA are .

May 29, 2011 – 18, 2005 · Antigenic shift refers to an abrupt, major change to produce a novel influenza A virus subtype in humans that was .

1 answer - Feb 13, 2008Mutations in the genetic material (is RNA in flu virus). .

An outbreak such as the one in 1918 could easily occur again if the influenza virus were to undergo a process known as "antigenic shift". .

Feb 8, 2011 – The other type of change is called “antigenic shift.” Antigenic shift is an abrupt, major change in the influenza A viruses, resulting in .

Antigenic Shift: The influenza virus can mutate through antigenic shift, causing new outbreaks to occur in human populations. .

Antigenic shift is contrasted with antigenic drift, which is the natural mutation over time of known strains of influenza to evade the immune system. .

Influenza has both antigenic shift and antigenic drift. What is the difference between the two? Drift is a minor change in surface glycoproteins that allows .

1 post - 1 author - Last post: Nov 11, 2010NEJM. Influenza Vaccine — Outmaneuvering Antigenic Shift and Drift Viral mechanisms.

Antigenic shift is the process by which at least two different strains of a virus (or different viruses), especially influenza, combine to form a new .

Although influenza causes significant morbidity and mortality each year, . This is called "antigenic shift". As the virus passes through an .

An antigenic shift results in a new influenza A subtype. It may occur when the eight genomic segments of one virus mix with the segments of another virus, .

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May 5, 2009 – Antigenic shift can happen in three ways: Antigenic Shift 1. A duck or other aquatic bird passes a bird strain of influenza A to an .

How Influenza Viruses Change: Drift and Shift. Influenza viruses can change in two different ways. One type is called "antigenic drift," which occurs .

Antigenic shift is the process by which two different strains of influenza combine to form a new subtype having a mixture of the surface antigens of the two .

Influenza A virus illustration. Right. Influenza virus colorized electron micrograph. Antigenicity, Antigenic Shift and Antigenic Drift in Influenza Viruses .

Antigenic shift. Antigenic shift is the process by which two different strains of influenza combine to form a new subtype having a mixture of the surface .

Jump to Pandemics and Antigenic Shift‎: Three pandemics of influenza have swept the world since the "Spanish" flu of 1918. The "Asian" flu pandemic of .

Jan 14, 2011 – Antigenic Shift 1. A duck or other aquatic bird passes a bird strain of influenza A to an intermediate host such as a chicken or pig. .

Jump to In influenza viruses‎: In the influenza virus, the two relevant antigens are . Antigenic drift .

Influenza viruses are orthomyxoviruses and are characterized by . type A virus has highest antigenic variability resulting in its antigenic shift and .

Influenza viruses can change in two different ways—antigenic drift and .

Jump to Role in transmission of influenza viruses from animals to people‎: Influenza A viruses are found in many different animals, including ducks, .

Jump to How Influenza Viruses Change: Drift and Shift‎: Influenza viruses can change in two different ways: antigenic drift and antigenic shift. .

May 4, 2009 – Antigenic shift is the process by which at least two different strains of a virus, (or different viruses), especially influenza, .

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Jump to Role in transmission of influenza viruses from animals to people‎: Influenza A viruses are found in many different animals, including ducks, .

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What are the mechanisms of the processes of "antigenic drift" and "antigenic shift" by which influenza virus undergoes evolutionary change? .

The structure of the influenza virus does not remain the same over the time. It changes in two methods, antigenic drift and antigenic shift. .

Variants: Influenza A variants are produced by two mechanisms: antigenic drift and antigenic shift. Antigenic drift is the more common mechanism for .

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Antigenic shift is contrasted with antigenic drift, which is the natural mutation over time of known strains of influenza (or other things, .

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Antigenic Shift: Figure: Antigenic Shift Route 3. Figure: Antigenic Shift Route 3 - Timeline of Emergence of Influenza Viruses in Humans .

These major changes or “antigenic shifts” can occur when two separate strains of influenza infect the same cell simultaneously. When this happens, a new .

Antigenic shift is the process by which two different strains of influenza combine to form a new subtype which is characterized by a mixture of the surface .

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1 answer - Feb 3, 2010The high mutation rate of the influenza virus is the main cause, as well as the fact that influenza viruses are being exposed to mutagens all the .

Apr 30, 2009 – Only the influenza Type-A virus is capable of what is known as antigenic shift. The current flu in circulation is an entirely new, .

Facts about antigenic shift: influenza, . which is driven by mutations in the genes encoding antigen proteins. Periodically, the viruses undergo major .

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Mar 23, 2006 – The answer lies in a phenomenon called the “antigenic shift.” The danger is not avian influenza in its current form, but rather what new .

The term antigenic shift is specific to the influenza literature; . Influenza viruses which have undergone antigenic shift have caused the Asian Flu .

An influenza pandemic occurs when a new subtype or strain of influenza virus develops from antigenic shift and spreads globally. Three pandemics occurred in .

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The influenza virus can mutate through antigenic shift, causing new outbreaks to occur in human populations. Related Links .

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