PFGE analysis (XbaI) of M. mageritense isolates from patients and whirlpool footbaths as indicated for the respective lanes. Lane 1, case 2; lane 2, case 1; lane 3, footbath 2 (jet); lane 4, footbath 4 (behind inlet suction screen); lane 5, footbath 22 (inlet suction screen); lane 6, footbath 2 (inlet suction screen); lane 7, footbath 4 (jet); lane 8, footbath 2 (behind inlet suction screen); lane 9, footbath 2 (overflow drain); lane 10, 48.5-kb λ ladder.