[Incidence of enterohemorrhagic E. coli in meat]. / Untersuchungen zum Vorkommen von enterohämorrhagischen E. coli (EHEC) in Fleisch.

In the period of August 1995 to January 1996 samples of beef and pork completed by raw sausages, were tested for enterohaemorrhagic strains of Escherichia coli. Samples were taken in a meat-processing company after mincing and cooling, delivered to the microbiological laboratory. All investigated meat originated from slaughterhouses which are EU-certified. In this study we found in no case enterohaemorrhagic strains of E. coli. Colony forming units were in the test 10(5)/g meat in average.

[Refuse disposal in the hospital]. / Abfallbeseitigung im Krankenhaus.

From the point of view of hygiene and the prevention of infection, waste products from hospitals have to be divided into three groups: household type refuse, refuse specific to hospitals, refuse from infectious wards. Particular care has to be taken in hospitals with the collection and transport of specific hospital refuse and refuse from infectious wards, but after being delivered to the central collecting point the former--in contrast to refuse from infectious wards--can be removed together with household type refuse in the normal manner by the local waste disposal service. If it is not to be incinerated, refuse from infectious wards may only be disposed to together with household type refuse after undergoing a good disinfection practice.

[Waste water pollutants due to the use of disinfectants in the hospital]. / Abwasserbelastung durch Desinfektionsmittelanwendung im Krankenhaus.

It is assumed that the antiseptic effect of disinfectants in effluents from hospitals can severely disturb the growth of microorganisms in the different stages of aeration of sewage plants. Regular biological catabolism could therefore be damaged. The impact of substances on the waste water depends on the concentration of disinfectants they contain. Consequently this essay first examines the expected quantities of antiseptic substances in the effluent of a medium-sized hospital (440 Beds). The effluents treated here however showed a low concentration of disinfectants and it could be proved that these quantities do not have any harmful effects on the examined parameters such as BOD (Biochemical Oxygen Demand), COD (Chemical Oxygen Demand) and pH-value.

[Hygiene certification of the Society for Proper Quality of Linen Care, Incorporated]. / Hygienezeugnis der Gütegemeinschaft sachgemässe Wäschepflege e. V.

This is a survey of textile-technical requirements, of quality controls, of the hygiene certificate as well as of the relevant valid legal provisions, regulations and directions. The test-list for works inspection is quoted. The hygienic-bacteriological control methods as well as the checking methods are described by means of selected examples.

[Bacteriologic studies on the preservation of bone implants]. / Bakteriologische Untersuchungen zur Konservierung von Knochenimplantaten.

High demands on freedom from germs are made on auditory ossicles to be used as implants. Postoperative infections often result from the existence of germ-contaminated ossicles. That is why we undertook microbiological examinations, using three frequently applied preserving methods for auditory ossicles kept for tympanoplasties. The results of the examinations were: Disinfection by Cialit (often used in clinical practice) produced unsatisfactory results. Disinfection by ethyl alcohol (70 per cent) and a subsequent treatment with thiomersal-Ringer's solution (0.4 per cent) yielded satisfactory results. Disinfection by preservation with an aqueous solution of formalin and subsequent treatment with Cialit proved most effective. None of the applicated germs could be regrown.