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What Causes Viruses to Mutate?
Virus changes are associated with three things. First, sometimes a change in a virus is a pure error.
“A good analogy about virus changes is that it’s like copying a manuscript and, at some point, you're going to have a typo,” Dr. Best says.
Another reason a virus might change is because of pressure from select cells in the body.
“This hypothesis emerged regarding some of the COVID-19 variants. It states if a virus infects a person who doesn’t have a very strong immune system, for example, someone with cancer, then the body is not able to clear the virus very well. Then the virus can say, ‘Hey, how are you going to attack me and make changes based on that?’,” Dr. Best says.
The creation of a vaccine for any new virus could also cause additional mutations.
“Let’s explain this concept a little further. Any virus will keep trying to change, so it can continue to spread. With all vaccines, the more quickly people get vaccinated the better. The slower vaccination happens, the higher the chance of having mutations in the virus and the appearance of more variants. And, as we are seeing with the delta variant, the more the virus can spread in the community.
In order to keep viruses in check, everyone must do their part by getting vaccinated, and scientists must work together around the world to track emerging variants.
Virus changes are associated with three things. First, sometimes a change in a virus is a pure error.
“A good analogy about virus changes is that it’s like copying a manuscript and, at some point, you're going to have a typo,” Dr. Best says.
Another reason a virus might change is because of pressure from select cells in the body.
“This hypothesis emerged regarding some of the COVID-19 variants. It states if a virus infects a person who doesn’t have a very strong immune system, for example, someone with cancer, then the body is not able to clear the virus very well. Then the virus can say, ‘Hey, how are you going to attack me and make changes based on that?’,” Dr. Best says.
The creation of a vaccine for any new virus could also cause additional mutations.
“Let’s explain this concept a little further. Any virus will keep trying to change, so it can continue to spread. With all vaccines, the more quickly people get vaccinated the better. The slower vaccination happens, the higher the chance of having mutations in the virus and the appearance of more variants. And, as we are seeing with the delta variant, the more the virus can spread in the community.
In order to keep viruses in check, everyone must do their part by getting vaccinated, and scientists must work together around the world to track emerging variants.