Table 2.

Numbers of animals tested (N), number MAT positive (n +ve), standardized prevalences and prevalence ratios for the six main Department of Livestock administrative regions. The standardized prevalences and prevalence ratios are shown as estimates with 95% confidence intervals in parentheses

Region	N	n +ve	Standardized prevalence	Prevalence ratio
Upper and lower North	3015	48	1·5 (1·1–1·9)	Reference
Upper and lower Northeast	2664	955	30·4 (28·2–32·5)	20·5 (15·34–27·3)
East	1527	17	0·7 (0·4–1·1)	0·5 (0·3–0·9)
Central	1931	455	22·2 (20–24·6)	15·0 (11·1–20·2)
West	1421	76	4·2 (3·3–5·1)	2·8 (2·0–4·0)
Upper and lower South	3630	84	1·1 (0·8–1·4)	0·7 (0·5–1·1)

MAT, Microscopic agglutination test.