Under normal circumstances, it is recommended that you swim at least 3 days after receiving the vaccination. After vaccination, there will be a local needle eye, which can be healed after 24 hours. To avoid the newly healed needle eye from cracking or infection, it is recommended that the vaccination site should not be exposed to water for 48 hours. In addition, after vaccination, the body will have a series of immune reactions, such as fever, red rash, dry throat, sore throat, cough, etc., which can be relieved by itself within 3 days. Swimming not only exposes the eye of the needle to water for a long time and increases the chance of infection, but also aggravates the uncomfortable symptoms that occur after vaccination. Therefore, it is recommended that swimming should not be done until 3 days after vaccination. Take rest after vaccination and try to keep the vaccination site clean and dry. If you want to go swimming, it is recommended that you do so after 3 days, and you need to ensure that the water and room temperatures are appropriate and that the swimming environment is clean and sanitary.