Trypanosoma cruzi amastigotes derived from fibroblast cultures and from cell- free liquid mediun were comparatively evaluated as solid-phase of Elisa for Chagas' disease. Amastigotes were obtained from the high- and low-virulent clones of the Talahuen strain and fron the G-1 strain. They were sonicated a...

An etiological study of bacterial diarrhea in infants under five years of age in Paraguay from May to July of 1990 was done. Enteropathogenic E. coli (EPEC) strains of known serogroups were isolate from 35.8 percent of the patients with diarrhea, Salmonella spp. were isolated from 15.1 percent , enteroto...

A bacteriological study of drinking water in three peripheral neighborhood of Asunción was performed. the sample were taken at nine homes dwellers were asked a questionnaire. The sample were taken in sterile 1-liter bottles from: 1. Water kept in 50 lt-plastic buckests; 2. Directly from the tap. At the ...