Finally, glad to hear it. I think that not all people know what a vaccine is in principle, so I will try to explain briefly, as I am quite well versed in this area. Like any vaccine, COVID-19 vaccines can cause mild, short-term side effects, such as a low-grade fever or pain or redness at the injection site. I advise you to read the essays on the vaccine at this link https://papersowl.com/examples/vaccine/ , which will allow you to expand your knowledge in such an important area. Most reactions to vaccines are mild and go away within a few days on their own. More serious or long-lasting side effects to vaccines are possible but extremely rare.