The Nexus between Bovine Tuberculosis and Fasciolosis Infections in Cattle of the Kafue Basin Ecosystem in Zambia: Implications on Abattoir Surveillance

Table 1

Proportion estimates and linear correlation of tuberculosis and fasciolosis positives based on abattoir survey by area of origin (𝑛=1,680, February to June of 2008) in Zambia.

Origin of	No. supplied	Abattoir Positives	95% CI	Condemned livers^¥	95% CI	Correlation TB and
animals		TB (%)	(%)	(%)	(%)	fasciola by area (𝑟)
Namwala^€	294	21 (7.14)	(4.2, 10.1)	107 (36.39)	(30.9, 41.9)	0.26
Maala	499	44 (8.82)	(6.3, 11.3)	164 (32.87)	(28.7, 36.9)	0.20
Basanga*	193	14 (7.25)	(3.5, 10.9)	73 (37.82)	(30.1, 44.7)	0.15
Lubwe*	308	11 (3.57)	(1.4, 5.6)	114 (37.01)	(31.6, 42.4)	0.14
Bambwe	50	4 (8.0)	(0.4, 15.6)	20 (40.00)	(26.2, 53.7)	0.30
Katantila*	7	0 (0.0)		3 (42.86)	(3.2, 82.4)
Namusonde	31	3 (9.68)	(0.0, 20.3)	14 (45.16)	(27.0, 62.9)	0.15
K/mwanda	13	2 (15.38)	(0.0, 35.8)	3 (23.08)	(0.0, 46.9)	−0.12
Banamwaze*	56	5 (8.93)	(1.3, 16.5)	16 (28.57)	(16.6, 40.5)	0.12
Kantengwa*	65	5 (7.69)	(1.2, 14.2)	32 (49.23)	(36.9, 61.4)	0.50
Chitongo*	84	5 (5.95)	(0.1, 11.0)	31 (36.90)	(26.5, 47.2)	0.31
Muchila*	42	6 (14.29)	(3.5, 25.0)	9 (21.43)	(8.9, 33.9)	0.55
Itezhi-tezhi*	38	4 (10.53)	(0.1, 20.4)	14 (36.84)	(21.0, 52.3)	0.01
Overall	1,680	24 (7.38)	(6.1, 8.6)	600 (35.7)	(33.4, 38.0)	0.13

Some cattle owners were identified by their villages, and these were then allocated to the nearest block area operated by a veterinary camp for ease of stratifying the data by area (refer to Figure 1). ^¥Only whole liver condemnations were considered as condemnations, not partial trimmings, and only jaundice was included and no other lesions that may explain presence of chronic fasciolosis. ^€For Namwala Central, some were actual owners of the animals whilst a greater majority were cattle traders, despite animals being bought somewhere else, which were recorded under Namwala Central due to lack of recall of places of origin.