9 months after the baby hit a prophylactic needle how to do repeatedly high fever

9 months after vaccination repeated high fever should not be caused by vaccination reaction, it may be caused by bacterial infection, viral infection and mycoplasma infection and other factors, should be admitted to hospital for blood test. If diagnosed as bacterial infection, should be admitted to hospital to take antibiotics and antipyretic drugs for treatment, if necessary, should also be combined with physical cooling therapy.