If you have been vaccinated and have accidentally taken a shower, you should dry the water around the eye of the needle to avoid infection. Keep yourself warm to prevent catching a cold. Bathing is usually prohibited for 24 hours after vaccination, as it may cause water to enter the needle eye at the vaccination site that has not yet healed and an infection may occur. If you accidentally take a shower, be sure to gently wipe the vaccinated area in a timely manner, dry the water in a timely manner, and disinfect the vaccinated area with iodine povidone to prevent water from entering the eye of the needle and causing infection. After taking a shower after vaccination, you must keep yourself warm to avoid catching a cold and aggravating the discomfort. If the vaccination site appears red, swollen, painful, pus, etc., it is recommended to consult a doctor in a timely manner, under the guidance of the doctor for incision and drainage, the use of antibiotics (such as ceftazidime, etc.) and other treatments.