After receiving the AC conjugate vaccine, there are usually no serious local and systemic reactions, and there are usually no adverse reactions. Individual children may have the following kinds of adverse reactions: 1. The site of the injection may be stiff, itchy or red, and there may also be pain, so you can use a hot towel on the site of the injection to relieve stiffness and pain; 2. Transient fever may occur, but Usually it is low fever, very few are high fever. In the case of low fever, you can take physical cooling methods, such as ice or cold towels to cool down, in the case of high fever, you can use antipyretic pellets to reduce fever, usually within 24 hours will return to normal, do not worry too much; 3, very few may appear nausea, stomach discomfort, weakness, and occasionally cough, abdominal pain, loss of appetite, chest tightness, etc., pay more attention to rest can be.