Try not to take a shower during the rash after MMR vaccination to avoid infection caused by the rash breaking out. If you have to take a shower, only wash with lukewarm water, don’t scrub, and pay attention to keep warm to avoid getting cold. MMR vaccine is a combined live attenuated vaccine, and the adverse reaction of body rash may occur after vaccination with this vaccine. Try not to take a shower when the rash develops, as showering may cause the rash to break, and the broken rash may become infected when it comes into contact with the shower water. During the period of rash after MMR vaccination, it is important to keep the skin dry and clean, which is conducive to the rash subsiding as soon as possible, and at the same time to avoid the occurrence of infection. During the period of MMR disease, people’s resistance is low and bathing is easy to get cold, which may cause aggravation of the disease, so if you have to take a bath, you need to pay attention to keep warm to avoid aggravation of the disease due to cold. In addition to avoiding bathing during the rash, you should also pay attention to your diet, focusing on a light diet, and try not to eat fish and shrimp and other seafood.