Dear Kaia,
Good question. Fortunately we do not have to worry about what could happen with the rest of the virus body because the vaccine solely includes a bit of mRNA that resembles the spike protein closely enough that our friendly immune system will be prepared for the real thing while making it impossible to actually become infected in the process. As for concern of other aspects of the picture, completely understandable to ensure you are making the best decision for yourself regarding potentially getting the vaccine. Reports from the Pfizer clinical trial are pretty optimistic in that most people just have a bit of a sore arm after the shot. That soreness can easily be controlled by something like Motrin or Tylenol if it gets too annoying. If you are interested more about the science, you can refer to the following articles that I have written. The first is written for someone with a bit more of a science background, the second assumes nothing at all.
https://medium.com/medicine-simplified/medicine-simplified-covid-19-vaccines-d98ede555e58
If you have further questions or explanations that you would be interested in, feel free to reply to this with some ideas. I have started a publication oriented on simplifying medical science as much as humanly possible so it seems a bit less intimidating.
Warmly,
Dr. Willett
