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H Mochmann

Publications and source records attributed to H Mochmann.

At least 19 recordsLinked to original sources
PubMed1991

[The occurrence and survival of Campylobacter in sewage sludge].

Campylobacter was found only in raw sewage sludge samples of the high-rate municipal sewage treatment plant studied. Campylobacters were isolated from 28.6% of the sewage sludge samples of grit tank and primary settling tank. 40% of the settled activated sludge samples contained Campylobacter. Campylobacter was never found in digested sludge of a mean sludge age of more than 90 days. The survival times of Campylobacter in sewage sludge samples ranged between some hours and 10 days. Therefore a low risk of the spread of Campylobacter in the environment due to agricultural application of digested sewage sludge is assumed.

Campylobacter↗
PubMed1989

A study of Campylobacter jejuni and Campylobacter coli in a river system.

Campylobacter isolates were detected in 82.1% of river water samples moderately polluted with organic wastes. In the majority of the samples less than 10 Campylobacter cfu/100 ml were detectable. The presence of waterfowl and the faecal contamination from a poultry-farm resulted in considerable higher Campylobacter contents (greater than 240/100 ml). Correlation studies showed a high correlation coefficient (P less than 0.05) between the number of campylobacters and that of total coliforms. Campylobacter isolates were never found in river water samples of 100 ml of volume with total coliform contents less than 10/ml. Campylobacter contents and the spectrum of serotypes isolated indicate hygienic precautions for drinking water supply from oligotrophic surface waters if the water is distributed without chlorination.

Animals↗
PubMed1989

[Antibiotic sensitivity of Campylobacter jejuni and Campylobacter coli strains with special reference to sensitivity to erythromycin and neomycin].

166 strains of C. jejuni and 46 strains of C. coli were typed against 14 antibiotics using the agar diffusion test. All strains were resistant against Penicillin G, Oxacillin and Rifampicin. Susceptibility were found against Chloramphenicol, Erythromycin, Neomycin, Oxytetracyclin, Streptomycin and Gentamycin. The minimal inhibition concentration was performed for Erythromycin and Neomycin. All strains tested were inhibited by less than or equal to 2 micrograms/ml Neomycin, one strain was resistant against 4 micrograms/ml Erythromycin.

Campylobacter↗
PubMed1988

Characterization of Campylobacter jejuni and Campylobacter coli isolated from waste water.

The raw sewage samples of the investigated municipal sewage plant (sewage flow of about 30,000 m3/d) contained about 10(3) campylobacters/100 ml. The sewage plant reduced 80.8% of organic wastes (COD), 85.0% of colony counts (20 degrees C), 92.5% of total coliforms and 88.0% of campylobacters. The sewage plant effluent contained an average of 1.3 X 10(2) campylobacters/100 ml. About 10(10) campylobacters are discharged with the effluent of the high-output sewage plant into the receiving water every day. No reduction of the indicator bacteria was found in the activated sludge tank, there was, however, a significant reduction (94.5%) of campylobacters. In total, 94 strains were differentiated by biotyping and serotyping. 59.6% were found to be Campylobacter jejuni and 40.4% were Campylobacter coli. 8 Serotypes were found among the C. jejuni strains and 12 among C. coli. The raw sewage of the investigated oxidation pond treatment plant contained an average of 51 campylobacters/100 ml. The sewage plant effluent did not show campylobacters in any case.

Bacterial Typing Techniques↗
PubMed1986

What is the correct specific epithet for pathogenic Leptospirae?

The underlying documentation of the first descriptions of members of the genus Leptospira is carefully revised. Stimson's publication of? Spirochaeta interrogans (1907) is to be inadequate and not suitable to be recognized as the first valid description of a new genus being only a description of a spirochete-like microorganism without any documentation. The naming of the species of pathogenic leptospira interrogans is therefore not in confirmity with the requirements of the International Code of Nomenclature. The first valid description of saprophytic leptospira is given by Wolbach and Binger (1914) and that of pathogenic ones by Inada and Ido (1915). The correct name for the species of pathogenic leptospira is therefore icterohaemorrhagiae and for the saprophytic ones biflexa.

Humans↗
PubMed1986

[A food-borne infection caused by Campylobacter jejuni serotype Lauwers 19].

Report on a outbreak due to contaminated food involving 556 schoolchildren who got their lunch from a school kitchen. The outbreak occurred abruptly without any secondary infectious. Examinations for Salmonellae, Shigellae, Enteritis-coli, Yersiniae and Rotaviruses were negative. However, Campylobacter jejuni were isolated from 105 specimens of faeces in Rostock. Sixty of these strains and another 2 that had been isolated at the same time but had no relation to the outbreak in Rostock, were further differentiated in Berlin-Buch. All of them proved to be Campylobacter jejuni biotype 2. Serotyping according to Lauwers revealed that 58 out of the 60 strains isolated belong to serotype 19. One of the two remaining strains could not be typed, the other was identified as serotype 1. One of the two cultivated strains that were not related to the outbreak in Rostock, was untypable, the other being of serotype 2. Therefore it can be assumed that the outbreak came from the same source of infection. Epidemiological investigations pointed to some food which had been served 6 days prior to the outbreak. The meal had consisted of white cabbage stew with beef. The kitchen supplies the cooked food to several institutions; 3 different dishes being prepared each day, referred to as dish, A, B and C. The institutions receiving dish A - which on November 1, 1985 was the above-mentioned white cabbage stew - actually included several classes of a school as well as a kindergarten. On that particular day however the kindergarten had not been supplied with dish A but, as an exception, with dish B.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗