How did the pig start the Swine Flu?
Viruses cause flu. Viruses are little pieces of DNA or RNA surrounded by a shell. These viruses infect a cell. Once they get inside a cell, the viruses lose their shells and the pieces of DNA or RNA start making new copies of the DNA or RNA and put them into new shells. The cell then falls apart and releases all the new viruses. Sometimes a bird, animal, or human catches two or more types of flu at once. Then pieces...
How is the flu virus pervasive?
The flu virus is pervasive in that it is a common virus which is spread from person to person generally in the cold months. There are several sub-categories of the flu virus, and the flu shot will usually contain 2 or three of these variations annually. ...
Why does the flu virus mutate so often?
This is a function of the genetic material of the virus - it is RNA rather than DNA and the virus has no "proofreading" enzymes to make sure the copies are exact. It is extremely easy for a mutation to slip in, and since there are only so many genes, each of which are coding for proteins in the virus, the capsule of the virus mutates rapidly. ...
Asked in Pharmaceutical Industry
Why must pharmaceutical companies develop flu vaccines every year?
Influenza is an RNA virus. Being that it is an RNA virus it has a high rate of mutation that goes unchecked. This high rate of mutation leads to different strains of the influenza virus ...
What are the four viruses called that are caused in the Swine Flu?
It is not a combination of four viruses in swine flu, only the one H1N1/09 virus. You may be thinking of the four types of genetic material contained in the genome (virus DNA or RNA hereditary information) that are found in the H1N1/09 virus. These contain the genetic material of the virus and help in identification of the specific virus and the origins of it. Swine flu (H1N1/09) contains genomes from four types of flu, this is called a quadruple reassortant (or reassortment)....
Can you get the flu twice?
Yes, the thing with influenza is that it is a negatively stranded RNA virus that does not contain an proofreading region in it's RNA polymerase. Therefore, it mutates very rapidly, which is why you have to get a flu vaccination every year as the strains are constantly changing. ...
Is the Bird Flu the same as Ebola?
NO. The Bird Flu is influenza caused by the H5N1 virus, also known as the Avian Flu. H5N1 virus is an influenza virus (cold virus). And Ebola is a filovirus that has little in common with the aforementioned diseases caused by different viruses. ...
What is a flu virus?
A flu virus is an organism that causes a respiratory infectious disease in animals and man. This type of virus attacks the respiratory system and gives you the symptoms of the flu. Influenza viruses such as these are not living organisms, like bacteria and fungi, but they are inanimate particles that can attach to our cells and make the cells start reproducing the virus instead of the cell's ordinary job for the host animal. They can not reproduce without a host's living...
Once you get a flu vaccine do you always have to get it?
The outer coating of the flu virus continually changes its shape. The flu vaccine uses a weak form of the virus with a similar shape to the most common types of flu. By the next year, a new type of flu is circulating. If you get a vaccine, it will be for a virus with a different shape. You will have the option of getting a vaccine for the new type of flu. ...