What tests do you need to do before getting the HPV vaccine?

Cervical cancer vaccine is a protein vaccine, because some people will show protein allergy, so after the vaccine is finished, you should stay at the injection site for at least half an hour to see if there is any allergic reaction. If after vaccination, suddenly found pregnant, then the follow-up vaccine should not be injected again, to wait until the end of pregnancy or lactation to add follow-up vaccine.