Abnormal reactions to vaccination are usually transient, including fever, nausea, vomiting, and localized redness, swelling and pain, and generally do not require special treatment. If an allergic reaction occurs, it should be treated with epinephrine and glucocorticoid drugs. Some people may have some abnormal reactions after vaccination, such as fever, nausea, vomiting, fatigue, drowsiness as well as localized redness, swelling and pain, etc., which are usually temporary and can be improved after a period of time, and do not need special treatment. During this period, you can rest more, you can use a warm towel to wipe the skin to cool down the temperature. If an allergic reaction occurs after vaccination, patients with severe symptoms should be injected with epinephrine to avoid anaphylactic shock. If the allergic reaction is mild, oral glucocorticoid drugs, such as dexamethasone, hydrocortisone, etc., to play an anti-inflammatory effect. Diet after vaccination should be light, avoid spicy and stimulating food. Rest more, avoid overwork, keep local clean to avoid infection. After vaccination, you should stay in the hospital for half an hour for observation, if there is no discomfort, you can leave, and after going home, you need to consult a doctor if you have any adverse reactions that last for 3 days without relief.