[The course of trypanosoma cruzi infection in nonsplenectomized SPE rats with and without Haemobartonella muris infection (author's transl)].

Rats were infected with H. muris from the first to the second week of their life. Four weeks later 20 of the infected rats were inoculated with 1.5 x 10(5) T. cruzi. Control animals were given the same number of parasites. In both experimental groups no hemoflagellate could be seen in blood smears four weeks after infection. The comparison of the course of infection of T. cruzi in rats with and without H. muris was made using t- and Wilcoxon-Test for Pair Differences. Rats with H. muris infections showed a low development of T. cruzi up to the 16th day of infection with this flagellate (P less than 0.0005). This difference in the development of the trypanosomes is lost from the 17th to the 27th day after infection.