A child with cough and fever visited the hospital on the first day and was found to have a white blood cell count of up to 17,000. The doctor recommended anti-inflammatory medication, but after three days of intravenous treatment (including cephalosporin drugs and Anxiu Su), the symptoms did not improve and even worsened. Fever requires antipyretic medication to lower the temperature, and the interval between fevers is short, with temperatures rising quickly again after they drop. The cough has also become more severe than at the beginning. The fever temperature is often above 38.5 degrees, even reaching 39 degrees. If the symptoms do not improve by tomorrow, what should be done?