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Maternal PKU is an embryo-fetopathy caused by elevated plasmaphenylalanine levels in pregnant women with hyperphenylalaninemia and phenylketonuira. Leading symptoms are microcephaly, mental retardatioin and congenital malformations, especially congenital heart disease. Maternal PKU becomes more important since early treated and normally developed girls with PKU are reaching their reproductive age in increasing numbers. There is a lack of adequate knowledge about the dangers of maternal PKU in at-risk women. Only 43% of these women in the Federal Republic of Germany are located by now and can be informed and instructed. Ways and conditions of tracking are described.

Since proteus inconstans turns out to be the causative agent of an increasing amount of hospital infections, studies on this species are necessary. By means of bacteriocines, biochemical reactions and antibiograms 53 strains were subclassified. 47 strains displayed same biochemical properties, 44 strains showed the same antibiogram. By the method on the basis of bacteriocine typing 15 groups were established. The strains with the same biochemical properties and the same antibiograms could be further subclassified. The distribution of the different bacteriocine groups showed that the infections were not due to a single strain. In contrast there were some indices for cross-infections on some stations.