![[A picture of virus particles each in a different color to represent a different Sars-CoV-2 variant.]](https://blogs.iu.edu/sciu/files/2021/08/virus-5231044_960_720.png)
Because the COVID-19 pandemic has been raging for almost 2 years now, most people have heard of the different viral variants that threaten the effectiveness of full protection with vaccines. This topic can be confusing to anyone who is not familiar with viruses or virology. This article will: 1) help you understand what viral variants are, and 2) explain where they come from. Viruses rely on host organisms (e.g., people and/or animals) to make more copies of themselves so that they can infect more hosts. However, hosts typically mount an immune response to clear a virus, which creates a challenge for viruses to overcome…