[Salmonella montevideo from a hospital outbreak with different antibiograms determined by a plasmid].

From May to June 1984 an outbreak of Salmonella montevideo occurred in the neonatal ward of a district's hospital. 26 babies were involved and mild forms of disease were observed in the most cases. The infants were hospitalized from different reasons and treated chemotherapeutically prior to the nosocomial infection.

[Importation of Shigella and Salmonella into East Germany].

The international tourist traffic and the import of provisions also involves the importation of Shigella and Salmonella into the GDR. In 1980 9% of the Shigella sonnei infections and 50% of the Shigella flexneri infections were imported from 22 or 26 countries, in most cases from tourist countries, typical for the GDR. The Salmonella are imported mainly by feed-stuff.

A new semidefined nutrient medium for bacterial susceptibility testing.

A new semidefined nutrient medium for testing of bacterial resistance against chemotherapeutics is described. Nutrients, poor in antagonists, vitamins and ions are balanced. Full effectiveness in view of sensitivity and expression of bacterial resistance mechanisms of all chemotherapeutics tested is guaranteed.

[Modern epidemiologic and pathogenetic findings illustrated by the example of cholera].

In 1883 Robert Koch isolated and characterized Vibrio comma as the etiological agent of cholera thereby creating a breakthrough in cholera research. Pathogenesis and pathophysiology of diarrheal diseases caused by V. cholerae and enterotoxigenic E.

[Incidence of antibiotic resistance in Salmonella typhimurium strains isolated in different epidemic situations].

A total of 1800 S. typhimurium strains isolated in different regions of the USSR in 1968-1979 were studied. Of these strains, 68.

Enterotoxigenicity among salmonellae--a prospective analysis for a surveillance programme.

Gastroenteritis and food poisoning caused by several Salmonella serotypes are frequently observed in many countries. In particular, S. typhimurium has been found ranking first that put forward the question whether S.

[Chemotherapeutic strategy and chemotherapeutic regimes].

The problems arisen from plasmid mediated drug-resistance can only be solved by a chemotherapeutic drug policy with due regard to the different ecological processes. The antibiotic policy has the following purpose: 1. Estimation and prognosis of the use of chemotherapeutics in the therapy and prophylaxis of man and animals, the animal production, other paratherapeutic fields of application (feed-stuff industry, cosmetics etc.

Surveillance of R-plasmids.

The surveillance of R-plasmids consists of: (1.) Ecological and epidemiological investigations. (1.

[The incidence of frequently occurring Sh. sonnei phage types in the GDR].

On the basis of literature data (from 1955 to 1970) and own studies (from 1962 to 1974) the authors present information on phage types of Sh. sonnei the most frequently encountered in the GDR. It was possible to trace the detection and the incidence of individual phage types at the territory of the republic (by time).