Generalized soreness after the third dose of the New Crown vaccine may be an adverse reaction to the vaccination. In general, after vaccination, there is a possibility of adverse reactions. This is because after vaccination, the body’s immune function may be affected, causing some uncomfortable symptoms in the body. After vaccination, the clinical symptoms that may occur include fever, muscle and joint pain, fatigue, dizziness, headache and other systemic symptoms, or nausea, vomiting, abdominal pain, diarrhea and other gastrointestinal symptoms, or redness, swelling, heat and pain at the injection site. As with other vaccines, these symptoms may occur and should not be a cause for concern. Generally, these symptoms may last for 1 to 3 days and then gradually subside. During this period, you need to strengthen nutrition, drink plenty of water, pay attention to rest, and avoid premature exposure to water at the injection site. However, if the symptoms persist or worsen, it is recommended to consult a doctor to avoid delay in treatment.