“…A comparison of serological and parasitological tests to detect T. cruzi infection in 116 D. albiventris captured in Bambuí, State of Minas Gerais, revealed that 97.7% of the infected animals were positive in both tests (Fernandes et al 1990). Having used fresh and Giemsa-stained smears, hemoculture and xenodiagnosis to detect T. cruzi infection in opossums during this study, 34 negative animals were kept in the laboratory and followed during two months by parasitological and serological tests (indirect immunofluorescence).…”