[Interactions of 2 associated parasitoses in the rat: Plasmodium berghei and Strongyloides ratti].

When Plasmodium berghei and Strongyloides ratti are associated, each one of these parasites can modify development of the other one. This repercussion is subordinated to the respective periods of contamination and strength of influential parasitism. It lies in an inhibition of Protozoosis or intensification of helminthiasis. When severe, palustral infection releases two hypercosticosteronemy phases; the more important one is situated at the peak of the parasitemia. These hypercorticosteronemiae reactions to a severe malaria enable the interpretation of the variations of an associateds trongyloïdiasis. They may be regarded as one of the inducer elements of immunological depression which takes place in the course of malaria in rodents.