Patients are generally advised not to take a shower for 24 hours after the vaccination. This is because if you take a shower too early, you may get water in the eye of the needle, which may lead to infection. If the eye of the needle becomes infected, it may become red, swollen, hot, painful, or even septic in severe cases, and may lead to fever and other systemic symptoms. Therefore, it is recommended that patients should not take a shower for 24 hours, and then take a shower after the local needle eye has completely healed to effectively avoid infection. In addition, if the patient must take a bath due to special circumstances, the eye of the needle must be protected, for example, you can use the baby waterproof navel patch on the eye of the needle, can effectively avoid the bath sewage stained eye of the needle, can effectively reduce the bath caused by water caused by the eye of the needle infection.