Patient Zero- Decimator

This is a short story of a Russian experiment after the COVID-19 vaccine caused people to mutate. He needs to make a safe place where there are no mutants. Will he be able or will he and those around him die at the hands of the mutants. This is my first story I am publishing, so please tell me what I can improve. If you are just going to complain please don’t. I am just in high school and I am not a good author. Any advice would be appreciated.