What Makes Swine Flu So Dangerous?

What makes swine flu so dangerous is that like all influenza viruses it undergoes the process of antigenic drift. This is when spot mutations occur on the genetic material that causes slight changes in the physical make-up of the virus.

These slight changes are what frustrate scientist's attempts to create the ultimate vaccination for influenza. Due to constant changes to the protein particles of the outer coats of viruses (which the immune system is targeted for during vaccination) new vaccines are always needed to combat ever new versions of the viruses.

Swine flu is an example of such a change. But what are these changes and what parts of the virus causes the damage that destroys normal healthy cells?

The H1N1 designation of the swine flu virus gives us a clue to the inner workings of the virus. It represents the major functional proteins on its surface.

The 'H' stands for hemagglutinin which is a protein that binds the swine flu virus to the cell and injects its content into it.

The 'N' stands for neuraminidase which possesses a number of specialized enzymes that causes the infected cells to release the newly formed viruses.

All these aspects of swine flu make it potentially very dangerous. Even though the form that is currently spreading is relatively mild it could still change into a virulent strain in the next few months before winter arrives. The fact that it's also a new disease means that there is no current vaccine for the virus. So if it becomes more deadly, we will have no protection against it except for those provided by generic anti-viral drugs like Tamiflu and Relenza.

We know the devastation that influenza viruses can cause, the Spanish flu pandemic infected more than one third of the world's population and killed more than 50 million people.

We have no choice but to be vigilant in relation to the spread of swine flu. It is dangerous because it is so changeable and because of this we have to treat it extremely seriously.

Reas Johnson is a microbiology student, who loves writing about popular health related issues. Social medical issues are often best looked at when you are properly informed. It's easy to misinform and scare those that are not been given the facts.

To learn more about swine flu go to: [http://www.swine-flu-facts.info/]

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