Fig. 4From: The Pampa del Indio project: sustainable vector control and long-term declines in the prevalence and abundance of Triatoma infestans infected with Trypanosoma cruzi in the Argentine ChacoFrequency distribution of survey occasions (occurrences) (a) in which at least 1 Trypanosoma cruzi-infected Triatoma infestans was collected by any method in domiciles, kitchens or storerooms, and (b) prevalence of T. cruzi infection in T. infestans collected in the same ecotopes, by area in Pampa del Indio over 2007–2016Back to article page