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Age-specific composite prevalence of T. cruzi in dogs and cats according to household ethnic group in Pampa del Indio in 2008. (A) Dogs. (B) Cats. Twelve dogs and five cats of unknown age were excluded. Numbers close to data points represent the numbers of animals examined for infection. Arrows indicate the community-wide insecticide spraying campaign. Whiskers indicate the upper limit of the 95% CI.
