TABLE 1.

Campylobacter strains used in this study

Strain no.	Strain designation	Species	Source of isolationa	fla PCR typeb	PFGE typeb	Reference
1	81116	C. jejuni	Laboratory reference strain			18
2	81116R3	C. jejuni	flaB mutant of 81116c			29
3	331	C. jejuni	Poultry meat	1, 12	23	31
4	318	C. jejuni	Poultry meat	1, 1	22	31
5	307	C. jejuni	Poultry meat	8, 17	21	31
6	302	C. jejuni	Poultry meat	3, 4	20	31
7	303	C. jejuni	Poultry meat	1, 4	20	31
8	130c	C. jejuni	Poultry meat	6, 13	7	31
9	C144	C. jejuni	Chicken			7
10	C350	C. jejuni	Chicken			7
11	C356	C. jejuni	Chicken			7
12	C591	C. jejuni	Chicken			7
13	C626	C. coli	Chicken			7
14	C2505	C. coli	Chicken			7
15	C2143	C. coli	Chicken			7
16	C2146	C. coli	Chicken			7
17	C2150	C. coli	Chicken			7
18	C2155	C. coli	Chicken			7
19	C2450	C. jejuni	Chicken			7
20	C2246	C. jejuni	Chicken			7
21	C2264	C. jejuni	Chicken			7
22	C2345	C. jejuni	Chicken			7
23	C2355	C. coli	Chicken			7
24	C2360	C. jejuni	Chicken			7
25	C2362	C. jejuni	Chicken			7
26	C2375	C. coli	Chicken			7
27	C2380	C. coli	Chicken			7
28	C2385	C. coli	Chicken			7
29	C2390	C. coli	Chicken			7
30	C2400	C. coli	Chicken			7
31	C2412	C. jejuni	Chicken			7
32	C2436	C. coli	Chicken			7
33	C2446	C. jejuni	Chicken			7
34	19971322	C. jejuni	Humand
35	19980464	C. jejuni	Human
36	19971423	C. jejuni	Human
37	19971591	C. jejuni	Human
38	19980411	C. jejuni	Human
39	19980569	C. jejuni	Human
40	19980623	C. jejuni	Human
41	19980624	C. jejuni	Human
42	19980706	C. jejuni	Human
43	19980652	C. jejuni	Human
44	ATCC 29429	C. jejuni	Reference strain
45	ATCC 33559	C. coli	Reference strain

^aMost strains were isolated in The Netherlands; the exceptions were strains 331 and 318, which were isolated from poultry meat that originated from France (31). 

^bGenotypes have been described previously (31). 

^cStrain 81116R3 is a laboratory-derived mutant of 81116 containing a kanamycin resistance cassette in flaB (29). 

^dHuman C. jejuni isolates were randomly isolated from enteritis patients and were obtained from H. P. Endtz, Department of Clinical Microbiology, University Hospital Dijkzigt Rotterdam, The Netherlands.