Fat chickens, sick people

Infections by antibiotic-resistant strains of Campylobacter jejuni,
the most common cause of bacterial gastroenteritis, increased more
than
sevenfold in Minnesota between 1992 and 1998. The increase came
primarily from infections acquired during foreign travel, but
domestically acquired infections also increased between 1996 and 1998.

Epidemiological and laboratory data indicate that the resistance is
caused by the widespread use of fluoroquinolone antibiotics in
poultry to promote growth and fight infections.

Reference: Smith, K., Besser, J. et al. 1999.
Quinolone-resistant Campylobacter jejuni infections in
Minnesota, 1992-1998. N. Engl. J. Med. 340(20):1525-1532.