carrier: (medicine) a person (or animal) who has some pathogen to which he is immune but who can pass it on to others
immune: a person who is immune to a particular infection
teddy boys: a British youth subculture that first appeared in the 1950s; mainly from unskilled backgrounds, they adopted a pseudo-Edwardian dress code and rock'n'roll music; proletarian and xenophobic, they were involved in race riots in the United Kingdom