TABLE 5.

Results of C. psittaci detection in pharyngeal swab specimens of employees of the chicken and turkey slaughterhouse

Slaughterhouse and time	No. (%) of employees				Mean isolation score ± SD
	Total tested	Nested PCR positive	Culture positivea	Total positive
Chicken
Wk 1	53	4	3	4 (7.5)	0.75 ± 0.65
Wk 4	53	0	0	0 (0)	0 ± 0.0
Total	53	4	3	4 (7.5)	0.75 ± 0.65
Turkey
Wk 1	38	20	13	20 (53)	0.65 ± 0.59
Wk 4	38	28b	22c	28 (74)	1.1 ± 0.77
Total	38	20 + 13b = 33	13 + 10c = 23d	33 (87)	0.92 ± 0.73

^aAll culture-positive employees tested positive by nested PCR.

^bThirteen additional employees who were negative during week 1 were found to be positive by nested PCR during week 4.

^cTen additional employees who were negative during week 1 were found to be positive by nested PCR during week 4.

^dAll employees were nested PCR-EIA positive.