Table 2.

Prevalence and incidence of L. infantum infection rates in areas with different intervention times by the Brazilian Visceral Leishmaniasis Surveillance and Control Programme, Belo Horizonte, Minas Gerais, Brazil

Areas	Prevalence 2010 (95% CI)	Prevalence 2012 (95% CI)	Change (%)	Incidence 2012 (95% CI)	Person-time incidencea (95% CI)
AI2006	12.9 (10.6–15.6)	23.7 (19.1–28.9)	83.7	14.4 (9.8–20.7)	6.2 (4.0–9.1)
AI 2008	14.7 (12.3–17.6)	25.6 (21.1–30.7)	74.1	21.1 (15.8–27.6)	10.0 (7.2–13.6)
AI 2010	17.9 (14.8–21.4)	17.0 (13.1–21.8)	-5.3	11.6 (7.3–18.0)	5.6 (3.3–9.0)

^aDenominator: Loss/2 + number of children on follow-up for 24 months for each area analyzed. Incidence rate/100 persons-24 months

Abbreviations: AI2006, area of intervention since 2006; AI2008, area of intervention since 2008; AI2010, area of intervention since 2010; CI, confidence interval