Table I.

Overall, winter, and summer estimates for Campylobacter species^a and Campylobacter jejuni^b in feedlot cattle feces

	Overall			Winter			Summer
Feedlot	Pos (n)	% Pos	95% CIc	Pos (n)	% Pos	95% CIc	Pos (n)	% Pos	95% CIc
Campylobacter species
A	365 (396)	92	89–95	182 (200)	91	86–95	183 (196)	93	89–96
B	362 (400)	91	87–93	180 (200)	90	85–94	182 (200)	91	86–95
C	381 (400)	95	93–97	197 (200)	99	96–100	184 (200)	92	87–95
D	350 (400)	88	84–91	172 (200)	86	81–90	178 (200)	89	84–93
E	366 (400)	92	88–94	180 (200)	90	85–94	186 (200)	93	89–96
F	297 (393)	76	71–80	154 (200)	77	71–83	143 (193)	74	67–80
G	299 (387)	77	73–81	145 (200)	73	66–79	154 (187)	82	76–88
Total	2420 (2776)d,e	87	86–88	1210 (1400)	86	85–88	1210 (1376)d,e	88	86–90
Campylobacter jejuni
A	163 (223)	73	67–79	24 (40)	60	43–75	139 (183)	76	43–75
B	148 (222)	67	60–73	24 (40)	60	43–75	124 (182)	68	69–82
C	144 (224)	64	58–71	28 (40)	70	53–83	116 (184)	63	56–70
D	156 (216)	72	66–78	25 (38)	66	49–80	131 (178)	74	66–80
E	159 (226)	70	64–76	24 (40)	60	43–75	135 (186)	73	66–79
F	136 (183)	74	67–80	28 (40)	70	53–83	108 (143)	76	68–82
G	114 (192)	59	52–66	24 (39)	62	45–77	90 (153)	59	51–67
H	1020 (1486)f,g	69	66–71	177 (277)f	64	58–70	843 (1209)g	70	67–72

Pos — positive.

CI — confidence interval.

^aCampylobacter positive by culture.

^bCampylobacter positive isolates identified as C. jejuni using hippurate hydrolysis testing.

^cBinomial exact confidence interval.

^dSample not readable due to mold overgrowth (n = 22).

^eMissing data (n = 2).

^fMissing data (n = 3).

^gMissing data (n = 1).