Temporal fluctuations in the sero-prevalence of Taenia solium cysticercosis in pigs in Mbeya Region, Tanzania

Parasites & Vectors

Table 1 Household and porcine data collected from three surveys in Mbeya and Mbozi districts, Mbeya Region, Tanzania

	Baseline	6-month follow-up	14-month follow-up
Time of survey	March/April 2012	October/November 2012	July/August 2013
Number of Households	450	424	511
Number of pigs	822	812	998
Male %	41	37	37
Female %	59	63	63
Age in month (mean)	7.38 (±4.58^a)	8.89 (±5.97^a)	9.48 (±6.04^a)
Production system practised
Confined (%)	627 (77.8)^b	604 (74.4)	748 (75.2)^c
Semi-confined (%)	101 (12.5)^b	50 (6.2)	158 (15.9)^c
Free-range (%)	78 (9.7)^b	158 (19.5)	89 (8.9)^c
Porcine cysticercosis
Number of positive pigs^d	127	198	202
Sero-prevalence % and (95% CI)	15 (13–18)	24 (21–27)	20 (18–23)
Difference between surveys	NA	<0.001^e	0.053^e

^a± Standard deviation.
^bBased on 806 pigs – production system was not record for 16 pigs (n = 822).
^cBased on 995 pigs – production system was not record for three pigs (n = 998).
^dBased on Ag-ELISA.
^eP values for χ²-test comparison between the preceding survey.

ISSN: 1756-3305