If children are repeatedly vaccinated, it will cause some symptoms of impaired liver and kidney function, fever and cough in children, as follows: 1. Repeated vaccination of children may lead to impaired liver and kidney function; 2. If children are very sensitive, repeated vaccination will lead to fever and other reactions of vaccination, for example, if after measles vaccine or encephalitis vaccine, there is a possibility of Fever symptoms may worsen as well as symptoms such as coughing and wanting to sleep all the time; vaccination can effectively prevent various infectious diseases in children, and measles vaccine can effectively prevent measles. However, repeated vaccinations for children can also cause some effects on their bodies. Vaccinations for children must be done carefully and in strict accordance with the vaccination schedule, so as not to make mistakes, miss vaccinations or repeat vaccinations.