The reason why it is recommended not to take a bath after vaccination is that the baby may experience some discomfort after vaccination, such as fever, headache, muscle aches and pains. If you get cold in the shower, you will not be able to tell what the cause is, whether it is a reaction to the vaccine or a cold shower. In addition, for wound infection, vaccination is actually very traumatic, and in general, no blood vessels are pierced, and the eye of the needle is quickly sealed by the surrounding tissues and body fluids, so there is no need to worry about water entering through the eye of the needle, which can cause infection. If you think your baby needs a bath and you have the habit of bathing every day, you can take a bath, but if you have parents who would rather believe it than not, it is recommended that you take a bath 1-2 days after the vaccination.