If you accidentally take a shower after vaccination, you should dry the injection site in time and sterilize it with iodine povine if there is any redness or swelling. After the vaccination, it usually takes 1~2 days to take a shower to avoid infection at the injection site. If you accidentally take a shower, don’t worry too much, dry the injection site in time to reduce the risk of infection. If you observe redness, swelling, itching and pain at the injection site, you can use iodophor to sterilize it appropriately. If the symptoms are more serious and there are signs of fever, you should go to the hospital in time for standardized treatment. After vaccination, pay attention to the diet as light as possible, do not eat too spicy, stimulating food. At the same time, be careful not to exercise too strenuously, and rest more.