R Helmuth

Author PubWeight™ 55.15‹?›

Top papers

Rank Title Journal Year PubWeight™‹?›
1 Evolutionary genetic relationships of clones of Salmonella serovars that cause human typhoid and other enteric fevers. Infect Immun 1990 6.42
2 Toward a population genetic analysis of Salmonella: genetic diversity and relationships among strains of serotypes S. choleraesuis, S. derby, S. dublin, S. enteritidis, S. heidelberg, S. infantis, S. newport, and S. typhimurium. Proc Natl Acad Sci U S A 1988 4.43
3 Antimicrobial resistance. Is a major threat to public health. BMJ 1998 4.18
4 Epidemiology of virulence-associated plasmids and outer membrane protein patterns within seven common Salmonella serotypes. Infect Immun 1985 3.51
5 Detection and characterization of fecal verotoxin-producing Escherichia coli from healthy cattle. J Clin Microbiol 1990 2.60
6 Assignment of tra cistrons to EcoRI fragments of F sex factor DNA. J Bacteriol 1978 2.32
7 Cloning of enterotoxin gene from Aeromonas hydrophila provides conclusive evidence of production of a cytotonic enterotoxin. Infect Immun 1984 2.16
8 Operon structure of DNA transfer cistrons on the F sex factor. Nature 1975 2.15
9 X-ray diffraction and electron microscope studies on the structure of bacterial F pili. J Mol Biol 1979 1.57
10 Virulence and resistance determinants of German Staphylococcus aureus ST398 isolates from nonhuman sources. Appl Environ Microbiol 2011 1.42
11 Monitoring of antibiotic resistance in bacteria of animal origin: epidemiological and microbiological methodologies. Int J Antimicrob Agents 2000 1.34
12 R-factor cointegrate formation in Salmonella typhimurium bacteriophage type 201 strains. J Bacteriol 1981 1.31
13 Characterization and localization of drug resistance determinants in multidrug-resistant, integron-carrying Salmonella enterica serotype Typhimurium strains. Microb Drug Resist 2004 1.25
14 Evaluation of molecular typing methods for Salmonella enterica serovar Typhimurium DT104 isolated in Germany from healthy pigs. Vet Res 2001 1.21
15 Heteroduplex analysis of Salmonella virulence plasmids and their prevalence in isolates of defined sources. Microb Pathog 1991 1.20
16 Clonal relationship of Salmonella enterica serovar typhimurium phage type DT104 in Germany and Austria. Zentralbl Bakteriol 1999 1.19
17 Cell-cell interactions in conjugating Escherichia coli: purification of F pili with biological activity. Proc Natl Acad Sci U S A 1978 1.16
18 Outbreak of Salmonella typhimurium infection traced to contaminated chocolate and caused by a strain lacking the 60-megadalton virulence plasmid. J Clin Microbiol 1990 1.13
19 [Increasing number of Salmonella paratyphi B isolates from slaughtered poultry sent in to the national Salmonella reference laboratory]. Berl Munch Tierarztl Wochenschr 2001 1.07
20 Epidemiology of resistance to quinolones in Salmonella. Vet Res 2001 1.01
21 Salmonella enteritidis phage types in Germany. Eur J Epidemiol 1994 0.98
22 Incidence of quinolone resistance over the period 1986 to 1998 in veterinary Salmonella isolates from Germany. Antimicrob Agents Chemother 1999 0.93
23 High heterogeneity within methicillin-resistant Staphylococcus aureus ST398 isolates, defined by Cfr9I macrorestriction-pulsed-field gel electrophoresis profiles and spa and SCCmec types. Appl Environ Microbiol 2009 0.93
24 Incidence of quinolone resistance in strains of Salmonella isolated from poultry, cattle and pigs in Germany between 1998 and 2001. Vet Rec 2003 0.91
25 Resistance of Salmonella isolates in Germany. J Vet Med B Infect Dis Vet Public Health 2004 0.88
26 Plasmid-mediated quinolone resistance conferred by qnrS1 in Salmonella enterica serovar Virchow isolated from Turkish food of avian origin. J Antimicrob Chemother 2007 0.87
27 [Plasmid profiles of different Salmonella serovars from poultry flocks in Germany]. Berl Munch Tierarztl Wochenschr 1993 0.86
28 Different mutations in the oafA gene lead to loss of O5-antigen expression in Salmonella enterica serovar Typhimurium. J Appl Microbiol 2010 0.85
29 Phage types, antibiotic susceptibilities and plasmid profiles of Salmonella typhimurium and Salmonella enteritidis strains isolated in Istanbul, Turkey. Clin Microbiol Infect 2000 0.80
30 Salmonella in slaughter pigs of German origin: an epidemiological study. Eur J Epidemiol 2000 0.80
31 Detection of the induction of Salmonella enterotoxin gene expression by contact with epithelial cells with RT-PCR. FEMS Microbiol Lett 1997 0.79
32 [Fimbrial formation, antibiogram, plasmid content, lysotype and biotype of Salmonella]. Zentralbl Veterinarmed B 1988 0.79
33 Use of multiple-locus variable-number tandem-repeats analysis (MLVA) typing to characterize Salmonella Typhimurium DT41 broiler breeder infections. J Appl Microbiol 2010 0.78
34 Pulsed-field gel electrophoresis, plasmid profiles and phage types for the human isolates of Salmonella enterica serovar Enteritidis obtained over 13 years in Taiwan. J Appl Microbiol 2005 0.78
35 Molecular marker analysis of Salmonella typhimurium from surface waters, humans, and animals. Eur J Epidemiol 1995 0.77
36 Epidemiology and chromosomal location of genes encoding multiresistance in Salmonella dublin. J Antimicrob Chemother 1986 0.77
37 Detection of pathogens in Boidae and Pythonidae with and without respiratory disease. Vet Rec 2013 0.76
38 [Detection of verotoxin-producing E. coli in field isolates from domestic and agricultural animals in Sachsen-Anhalt]. Berl Munch Tierarztl Wochenschr 1994 0.75
39 [Mechanisms of the pathogenicity of Salmonellae]. Berl Munch Tierarztl Wochenschr 1986 0.75
40 Studies of the presence of the virulence factors, adhesion, invasion, intracellular multiplication and toxin formation in salmonellas of different origin. Zentralbl Bakteriol 1998 0.75
41 [Tasks and duties of veterinary reference laboratories for food borne zoonoses]. Bundesgesundheitsblatt Gesundheitsforschung Gesundheitsschutz 2009 0.75
42 Importance of the serovar-specific plasmid for virulence of salmonella strains in calves. Zentralbl Bakteriol 1997 0.75
43 Comparative studies of diagnostic bacteriological methods for the recovery of Salmonella from faecal samples from flocks of layers. Zentralbl Veterinarmed B 1998 0.75
44 [Immunization with potential Salmonella enteritidis mutants--1. Production and in vitro characterization]. Berl Munch Tierarztl Wochenschr 1996 0.75
45 [Detection of verotoxin-producing E. coli (VTEC) in healthy cattle and swine with the DNA-DNA colony hybridization method]. Berl Munch Tierarztl Wochenschr 1990 0.75