Until now, no serious side effects have been observed in both clinical trials conducted for the COVID-19 vaccines and in the routinely vaccinated population within Turkey. Post vaccination side effects are often mild. These mild side effects may include fatigue, headache, fever, chills, muscle/joint pain, vomiting, diarrhea, pain, redness and swelling around the area of injection. However, it should be noted that if any side effects other than those mentioned are to occur after vaccination, please seek medical attention and inform the physician that you have received the vaccine, without ignoring the possibility of rare serious allergic reactions.