[Antimicrobial resistance among species of Salmonella, Shigella, Escherichia, and aeromonas isolated from children with diarrhea in 7 Argentinian centers].

The increasing levels of resistance of enteropathogenic bacteria against antimicrobial agents present geographic variations. We have analysed the antimicrobial susceptibility of isolates obtained from 4,364 children under 5 years of age with acute diarrhea, in 7 cities of Argentina. Diarrheagenic E.

Non-typhoid Salmonella spp. resistant to cefotaxime.

beta-Lactamases with pIs of 5.4 and 8.1 were detected by hydrolysis of ampicillin and ceftriaxone respectively among cefotaxime resistant serovars of Salmonella spp.

[Serotypes of Salmonella in the Republic of Argentina isolated from human and non-human sources, 1979-1981].

A total of 49 serotypes were isolated in Argentina during the triennium 1979-1981, from 3,665 Salmonella strains isolated from different sources: human, animal, food and water. The degree of correlation among every one of them was analyzed in order to establish their influence in the cycles of transmission and human infection. S.