How does darling hit vaccine the 3rd day to have a fever to treat good

After vaccination, fever usually occurs within 48 hours. Fever below 38.5 degrees is normal. Fever above 38.5 degrees should be considered as vaccine reaction. Fever on the third day is not considered to be caused by vaccine. Warm water bath can be used for those less than 38.5 degrees, and antipyretics can be used for those greater than 38.5 degrees.