most international travel in our country remains either band banned or restricted until november but vaccinated americans are already free to travel abro, and will take more than your passport and a ticket to get there. we got our report tonight from nbc news correspondent t costello. reporter: while the u.s. has remained off limits to most international visitors, europe reopened to fully vaccinated americans thisummer. and it could get busier over the holidays. but before you even board a flight, you must upload your cdc vaccine card to the airline s website. many countries s health departments also require it. europeans use a phone app that displays their vaccination status. americans can use their cdc cards, but don t forget it. you need to show your c