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The susceptibility of 3rd instar nymph of Triatominae Rhodnius neglectus, R. robustus and Triatoma infestans to Trypanosoma cruzi Y and AMJM strains was verified using artificial xenodiagnosis. After the accomplishment of the xenodiagnosis, the faeces of the Triatominae were analyzed on two-day intervals from day 5 until day 31 post infection, using the abdominal compression technique. The results showed differences in the susceptibility of the Triatominae for the two strains studied, and the optimal period reading differed from day 11 to day 19 for the Y strain and from day 11 to day 15 for the AMJM strain. For the Y strain, all three Triatominae species showed good susceptibility, whereas in the AMJM strain, the highest susceptibility was observed with R. neglectus, followed by T. infestans and R. robustus.

In Brazil, there has been growing interest on alternative therapeutic approaches, as shown by asi increase of homeopathic prescriptions, and use of acupuncture and of the so called natural products. This study evaluated the usefulness of garlic (Allium sativum) for the treatment of ascaridiasis, trying to confirm the popular belief on this matter. Eight grams daily, as an infusion were used during five days, in children known to be infected with Ascaris lumbricoides. Little efficacy was observed, and this fact enhances the importance of not accepting propositions not based on adequately conducted studies.