Identification and Prevalence of Brucella Species Circulating among Cattle Slaughtered in the Douala and Buea Municipalities of Cameroon

Table 3

Prevalence of cattle brucellosis in cattle slaughtered at the Douala and Buea slaughterhouses based on ELISA and PCR results layered by animal characteristics.

Cattle characteristics		Stats	ELISA				PCR
			Positive	Negative	N	χ^2-test	Positive	Negative	N	χ^2-test
Sex
Male	Bull	n	16	440	456	χ^2 = 7.304; df = 2	27	429	456	χ^2 = 1.711; df = 2
		%	3.5	96.5	100		5.9	94.1	100
	Castrated	n	0	102	102		4	98	102
		%	0.0	100.0	100		3.9	96.1	100
Female		n	2	16	18		0	18	18
		%	11.1	88.9	100		0	100	100
Age range (years)
<4		n	0	4	4	χ^2 = 0.563; df = 2	0	4	4	χ^2 = 5.689; df = 2
		%	0	100	100		0	100	100
4 to 8		n	17	538	555		27	528	555
		%	3.1	96.9	100		4.9	95.1	100
>9		n	1	16	17		3	14	17
		%	5.9	94.1	100		17.6	82.4	100
Breed
Local	Bokolo	n	1	5	6	χ^2 = 4.814; df = 5	0	6	6	χ^2 = 5.193; df = 5
		%	16.7	83.3	100		0	100	100
	Gudali	n	3	142	145		5	140	145
		%	2.1	97.9	100		3.4	96.6	100
	Red Fulani	n	4	152	156		8	148	156
		%	2.6	97.4	100		5.1	94.9	100
	White Fulani	n	9	226	235		14	221	235
		%	3.8	96.2	100		6.0	94	100
Exotic	Crossbreed	n	1	30	31		4	27	31
		%	3.2	96.8	100		12.9	87.1	100
	Holstein	n	0	3	3		0	3	3
		%	0	100	100		0.0	100	100
Location
Buea		n	1	110	111	χ^2 = 2.247; df = 1	3	108	111	χ^2 = 1.938; df = 1
		%	0.9	99.1	100		2.7	97.3	100
Douala		n	17	448	465		28	437	465
		%	3.7	96.1	100		6	94	100
Total		n	18	558	576		31	545	576
		%	3.1	96.7	100		5.4	94.6	100

The bold values are the overall total values in each column.