Detection of seven virulence and toxin genes by PCR and evaluation of cytolethal distending toxin production in Campylobacter jejuni and Campylobacter coli isolate from animal, food and human clinical samples. FINAL COST 920 MEETING, “FUTURE CHALLENGES TO FOODBORNE ZOONOSIS”, ISPAIA ZOOPOLE DÉVELOPPEMENT-BP7-22440 PLOUFRAGAN, FRANCE, 10-12 SEPTEMBER 2006