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Trends in erythromycin and ciprofloxacin resistance in Campylobacter jejuni, Philadelphia, 1982–2001. Number of isolates tested: 1982–92 (n=142), 1995 (n=24), 1996 (n=48), 1997 (n=61), 1998 (n=37), 1999 (n=22), 2000 (n=48), and 2001 (n=47).
