Table 1. Prevalence rates with 95% confidence intervals for anti-filarial antibodies based on the Brugia Rapid test in children aged between 3 and 10 years of age prior to MDA (2001) and after one or more rounds of MDA.

Year	N examined	% Brugia Rapid Positive	95% CI
2001	120	82.0	75.1–88.8
2003	243	39.1	32.9–45.2
2004	202	41.1	34.3–47.9
2005	164	22.6	16.2–29.0
2006	138	13.0	7.4–18.6
2007	119	6.7	2.2–11.2
2008	115	13.9	7.4–20.2
2009	103	3.9	0.2–7.6
2010	116	4.9	0.6–8.0

The last round of MDA was performed in 2007. Since only selective treatment of MF carriers was performed in 2001, no Brugia Rapid tests were performed on the samples collected in 2002.