The third shot is generally referred to as the third shot of the New Crown Vaccine. Side effects after the third dose of the New Crown Vaccine are divided into general and severe. 1. General side effects: Most people do not experience any significant side effects after receiving the third dose of the new crown vaccine. A small number of people may have red, swollen and painful skin, hard nodules, fever, fatigue, headache, diarrhea, vomiting, loss of appetite and other symptoms after receiving the 3rd dose of New Crown vaccine. However, most of these cases are relatively mild and can be relieved in a short time after rest and symptomatic treatment. 2. Serious side effects: A very small number of people may experience some serious side effects, such as anaphylactic shock or organ function damage, after receiving the third dose of XKV vaccine. Therefore, if you want to receive the third dose of New Crown vaccine, it is recommended to do so under the guidance of your doctor. If you experience any special discomfort after vaccination, you must seek medical advice as soon as possible.