Pathogens are bacteria of the genus Campylobacter, mainly C. Jejuni, Campilobacteriaceae. The genus Campilobacter includes nine species. Campylobacter - mobile gram-negative rods 1.5-2 μm in length, 0.3-0.5 μm in diameter, have flagellum. Grow on agar media with the addition of erythrocytes and antibiotics (vancomycin, amphotericin B) to suppress co-flora, form small colonies.