In this undated handout photo supplied by Berkhan's family via the New Zealand Herald, Auckaland's Rangitoto College student Jamie Berkhan, 16, smiles. Twenty-two students and three teachers from Rangitoto College - New Zealand's biggest high school with some 2,500 teens - had a whirlwind of travel, sightseeing, staying in hostels, finishing up with "home stay families" in Mexico City and brought home swine flu infection.