Precautions for receiving the pertussis vaccine include, firstly, going to a formal medical institution for the vaccination. After routine disinfection of the local skin, the vaccine is usually administered subcutaneously. After vaccination, it is necessary to remain at the medical institution for observation for half an hour before leaving. Additionally, avoid taking a bath within twenty-four hours after vaccination, as the vaccination involves a skin incision. If the needle hole has not healed, bathing could cause the bath water or products like shower gel or soap to potentially lead to a secondary bacterial infection at the injection site.