TABLE 1.
C. jejuni isolates characterized in this study
| Isolatea | Date | Age (wk) | Company | Farm | Antimicrobial resistanceb | Antimicrobial resistance profile | ST |
|---|---|---|---|---|---|---|---|
| 5966 | 31 Oct 2003 | 5.5 | D | 2 | AQ | 2 | 2934 |
| 5996 | 14 Nov 2003 | 5.5 | D | 13 | ATSQ | 10 | 2936 |
| 6009 | 14 Nov 2003 | 7.5 | D | 2 | ATSKQ | 12 | |
| 6013 | 14 Nov 2003 | 7.5 | D | 2 | ATKQ | 8 | |
| 6040 | 1 Dec 2003 | 8 | D | 13 | ATQ | 6 | |
| 6041 | 1 Dec 2003 | 8 | D | 13 | ATKQ | 8 | |
| 6102 | 15 Dec 2003 | 10 | D | 13 | ATSKQ | 12 | 2132 |
| 6137 | 15 Feb 2004 | 5 | D | 1 | ATSK | 11 | 2132 |
| 6161 | 19 Feb 2004 | 7 | D | 1 | ATSQ | 10 | |
| 6209 | 11 Mar 2004 | 10 | D | 1 | ATSKQ | 12 | 1162 |
| 6447 | 8 Apr 2004 | 8 | D | 8 | ATKQ | 8 | 1796 |
| 6451 | 8 Apr 2004 | 8 | D | 8 | ATSQ | 10 | |
| 6470 | 9 Apr 2004 | 7 | D | 4 | ATSK | 11 | |
| 6471 | 9 Apr 2004 | 7 | D | 4 | AT | 5 | |
| 6532 | 22 Apr 2004 | 10 | D | 8 | ATSQ | 10 | 1839 |
| 6535 | 22 Apr 2004 | 10 | D | 8 | AT | 5 | |
| 6565 | 29 Apr 2004 | 10 | D | 5 | ATS | 9 | 1839 |
| 6608 | 4 May 2004 | 11 | D | 4 | ATSQ | 10 | 1839 |
| 6628 | 6 May 2004 | 12 | D | 8 | ATSQ | 10 | 1839 |
| 6631 | 6 May 2004 | 12 | D | 8 | AT | 5 | 1839 |
| 7287 | 13 July 2004 | 8 | D | 2 | ATSQ | 10 | 1839 |
| 7290 | 13 July 2004 | 8 | D | 2 | ATS | 9 | |
| 7294 | 13 July 2004 | 8 | D | 2 | ATSK | 11 | |
| 7320 | 13 July 2004 | 8 | D | 2 | ATSQ | 10 | |
| 7812 | 5 Aug 2004 | 10 | D | 5 | ATK | 7 | |
| 7813 | 5 Aug 2004 | 10 | D | 5 | AS | 3 | 2132 |
| 7895 | 11 Aug 2004 | 12 | D | 2 | ATKQ | 8 | |
| 8092 | 20 Aug 2004 | 12 | D | 5 | ATSQ | 10 | |
| 8359 | 22 Sep 2004 | 5 | D | 3 | AT | 5 | |
| 8633 | 6 Oct 2004 | 7 | D | 3 | ATKQ | 8 | |
| 8635 | 6 Oct 2004 | 7 | D | 3 | AQ | 2 | 2934 |
| 8647 | 6 Oct 2004 | 7 | D | 3 | ATSKQ | 12 | |
| 8665 | 6 Oct 2004 | 7 | D | 3 | A | 1 | 1838 |
| 8803 | 23 Oct 2004 | 7 | D | 12 | ATSKQ | 12 | |
| 8828 | 23 Oct 2004 | 7 | D | 12 | ATKQ | 8 | |
| 8865 | 27 Oct 2004 | 10 | D | 3 | ATKQ | 8 | |
| 8878 | 27 Oct 2004 | 10 | D | 3 | ATK | 7 | |
| 8904 | 27 Oct 2004 | 10 | D | 3 | A | 1 | 1838 |
| 8950 | 10 Nov 2004 | 10 | D | 12 | ATQ | 6 | |
| 8953 | 10 Nov 2004 | 10 | D | 12 | ATSK | 11 | |
| 8954 | 10 Nov 2004 | 10 | D | 12 | ATSQ | 10 | |
| 8959 | 10 Nov 2004 | 10 | D | 12 | ATS | 9 | |
| 9044 | 17 Nov 2004 | 13 | D | 3 | ATSK | 11 | |
| 9355 | 30 Dec 2004 | 6 | D | 12 | AS | 3 | 2132 |
| 9585 | 1 Feb 2005 | 7 | D | 3 | AT | 5 | |
| 9669 | 2 Feb 2005 | 11 | D | 12 | ATSKQ | 12 | |
| 9778 | 23 Feb 2005 | 14 | D | 12 | ASKQ | 4 | |
| 9838 | 24 Feb 2005 | 10 | D | 3 | ATSQ | 10 | |
| 9850 | 24 Feb 2005 | 10 | D | 3 | AS | 3 | 2132 |
| 10287 | 6 Jul 2005 | 7 | D | 1 | ATSKQ | 12 | |
| 10296 | 6 Jul 2005 | 7 | D | 1 | AQ | 2 | |
| 10297 | 6 Jul 2005 | 7 | D | 1 | AQ | 2 | 2934 |
| 10306 | 6 Jul 2005 | 7 | D | 1 | AS | 3 | 2132 |
| 10328 | 6 Jul 2005 | 7 | D | 1 | ATSK | 11 | |
| 10371 | 26 Jul 2005 | 10 | D | 1 | ATSQ | 10 | 2936 |
| 10882 | 9 Sep 2005 | 8 | D | 4 | ATSKQ | 12 | 1939 |
| 10884 | 9 Sep 2005 | 8 | D | 4 | ATSQ | 10 | |
| 10888 | 9 Sep 2005 | 8 | D | 4 | ATS | 9 | |
| 10977 | 23 Sep 2005 | 10 | D | 4 | AQ | 2 | 2934 |
| 11055 | 23 Sep 2005 | 10 | D | 8 | ATSQ | 10 | |
| 11211 | 17 Oct 2005 | 14 | D | 4 | AS | 3 | 2132 |
| 11222 | 17 Oct 2005 | 14 | D | 8 | ATSKQ | 12 | |
| 11250 | 17 Oct 2005 | 14 | D | 8 | AQ | 2 | |
| 11599 | 26 Sep 2006 | 12 | A | 6 | ATSKQ | 12 | 1839 |
| 11600 | 26 Sep 2006 | 12 | A | 6 | ATSKQ | 12 | 1839 |
| 11603 | 26 Sep 2006 | 11 | A | 17 | ATQ | 6 | 1839 |
| 11607 | 26 Sep 2006 | 13 | A | 7 | ATSK | 11 | 2132 |
| 11618 | 6 Oct 2006 | 8 | D | 10 | T | 13 | 1698 |
| 11619 | 6 Oct 2006 | 8 | D | 10 | ATKQ | 8 | 2934 |
| 11640 | 20 Oct 2006 | 10 | D | 11 | ATKQ | 8 | 2934 |
| 11599MD | 26 Sep 2006 | 12 | A | 6 | ATSK | 11 | 2132 |
| 11600MD | 26 Sep 2006 | 12 | A | 6 | ATSKQ | 12 | 2132 |
| 11601MD | 26 Sep 2006 | 12 | A | 6 | ATKQ | 8 | 2934 |
| 11618MD | 6 Oct 2006 | 8 | D | 10 | ATSQ | 10 | 2937 |
| 11640MD | 20 Oct 2006 | 10 | D | 11 | T | 13 | 1698 |
| SC1453 | 13 Dec 2006 | 3 | A | 9 | A | 1 | 2934 |
| SC1471 | 13 Dec 2006 | 3.5 | A | 15 | ATSKQ | 12 | 1839 |
| SC1486 | 13 Dec 2006 | 5 | B | 18 | ATSQ | 10 | 2935 |
| SC1527 | 14 Dec 2006 | 2.5 | C | 14 | ATQ | 6 | 1839 |
| SC1532 | 14 Dec 2006 | 7.5 | C | 16 | ATSQ | 10 | 2936 |
a
Isolates in boldface type were a subset of the C. jejuni isolate collection obtained from a previously described survey (40).
b
A, ampicillin; K, kanamycin; S, streptomycin; T, tetracycline; Q, (fluoro)quinolone (nalidixic acid and ciprofloxacin).