| frequency of isolation of campylobacter from roasted chicken samples from mexico city. | the presence of campylobacter spp. was investigated in 100 samples of roasted chicken tacos sold in well-established commercial outlets and semisettled street stands in mexico city. from 600 colonies displaying campylobacter morphology only 123 isolates were positive. from these isolates, 51 (41%) were identified as c. jejuni, 23 (19%) as c. coli, and 49 (40%) as other species of this genus. all of the 27 positive samples came from one location where handling practices allowed cross-contaminatio ... | 2000 | 10643780 |