List of works by Ørjan Olsvik

A heat-labile necrotic activity in supernatants from cultures of Legionella pneumophila

scientific article published on 01 April 1982

A nested PCR followed by magnetic separation of amplified fragments for detection of Escherichia coli Shiga-like toxin genes

scientific article published on December 1, 1991

A sandwich ELISA method for detection of Staphylococcus aureus enterotoxins

scientific article published on 01 December 1981

A sensitive ELISA method for protein A detection

scientific article published on 01 August 1981

A transferable multiple drug resistance plasmid from Vibrio cholerae O1.

scientific article

A unique plasmid profile characterizing Salmonella enteritidis isolates from patients and employees in a hospital.

scientific article published in January 1990

Acquired tetracycline resistance genes in nosocomial Salmonella typhimurium infection in a Kenyan hospital.

scientific article published in May 1993

Animal-to-human transmission of both sensitive and resistant Salmonella typhimurium demonstrated by plasmid profiling

scientific article

Antibodies against orthopoxviruses in wild carnivores from Fennoscandia

scientific article published in July 1998

Antibodies to orthopoxvirus in domestic cats in Norway

scientific article published on 01 July 1998

Antimicrobial resistance of enteropathogenic Escherichia coli strains from a nosocomial outbreak in Kenya

scientific article published on August 1, 1991

Characteristics of four cowpox virus isolates from Norway and Sweden

scientific article published in June 1998

Characterization of Escherichia coli strains isolated from pigs with edema disease.

scientific article published in February 1992

Characterization of enterotoxigenic Escherichia coli. Serotypes, enterotoxins, adhesion fimbriae, and the presence of plasmids

scientific article published on 01 August 1985

Colonization of neonates in a nursery ward with enteropathogenic Escherichia coli and correlation to the clinical histories of the children.

scientific article published on November 1989

Comparison between ELISA and dye test for detection of naturally acquired toxoplasma gondii antibodies in the goat

scientific article published in January 1983

Comparison of human immune responses to purified Vero cell and human diploid cell rabies vaccines by using two different antibody titration methods

scientific article published on August 1990

Comparison of thymidine kinase and A-type inclusion protein gene sequences from Norwegian and Swedish cowpox virus isolates.

scientific article published in July 1999

Continuing high prevalence of VanA-type vancomycin-resistant enterococci on Norwegian poultry farms three years after avoparcin was banned

scientific article published on 01 September 2000

Demonstration of Escherichia coli heat-labile enterotoxin using bacterial cell sonicates

scientific article published on 01 August 1982

Demonstration of extracellular chymotrypsin-like activity from various Legionella species

scientific article published on September 1982

Demonstration of extracellular proteolytic enzymes from Legionella species strains by using synthetic chromogenic peptide substrates

scientific article

Detection of Clostridium perfringens type A enterotoxin by ELISA

scientific article published on 01 December 1982

Detection of Clostridium perfringens type A enterotoxin in faecal and food samples using immunomagnetic separation (IMS)-ELISA

scientific article published on 01 April 1991

Detection of Escherichia coli heat-stable enterotoxin genes in pig stool specimens by an immobilized, colorimetric, nested polymerase chain reaction.

scientific article published on November 1991

Detection of Listeria monocytogenes in foods by immunomagnetic separation

scientific article published on November 1990

Detection of a streptomycin/spectinomycin adenylyltransferase gene (aadA) in Enterococcus faecalis

scientific article

Detection of infectious pancreatic necrosis virus (IPNV) RNA by hybridization with an oligonucleotide DNA probe

scientific article published in June 1990

Detection of staphylococcal enterotoxin A, B, and C in milk by an ELISA procedure

scientific article published on 01 January 1982

Detection of streptococcal pyrogenic exotoxin genes by a nested polymerase chain reaction

scientific article published in August 1993

Differences in bindings to the GM1 receptor by heat-labile enterotoxin of human and porcine Escherichia coli strains

scientific article published on 01 June 1983

Educational intervention for parents and healthcare providers leads to reduced antibiotic use in acute otitis media

scientific article published on 01 January 2002

Enteropathogenic Escherichia coli serotype O111:HNT isolated from preterm neonates in Nairobi, Kenya.

scientific article published on June 1989

Enterotoxigenic Escherichia coli in the jejunum of piglets with neonatal diarrhea.

scientific article published in January 1984

Enterotoxin production by Staphylococcus aureus related to the origin of the strains

scientific article published on 01 December 1981

Enterotoxin production in milk at 22 and 4 degrees C by Escherichia coli and Yersinia enterocolitica

scientific article published on May 1982

Epidemiologic application of a standardized ribotype scheme for Vibrio cholerae O1

scientific article published on September 1, 1993

Evolutionary relationships among members of the genus Chlamydia based on 16S ribosomal DNA analysis

scientific article published on July 1997

Gene technology in medical microbiology--epidemiology and diagnosis

scientific article published in November 1989

Genetic linkage of the vanB2 gene cluster to Tn5382 in vancomycin-resistant enterococci and characterization of two novel insertion sequences.

scientific article

Genetic probing of Campylobacter jejuni for cholera toxin and Escherichia coli heat-labile enterotoxin

scientific article published on 01 February 1984

Heat-stable-enterotoxin-producing Escherichia coli strains isolated from dogs

scientific article published on December 1988

Heterogeneity in the vanB gene cluster of genomically diverse clinical strains of vancomycin-resistant enterococci

scientific article published on May 1999

Hyaluronidase production, lactose and salicin fermentation and phage-typability in bovine group B Streptococci

scientific article published on 01 December 1981

Identification of a double-stranded RNA virus by using polymerase chain reaction and magnetic separation of the synthesized DNA segments

scientific article published on October 1990

Identification of thermotolerant Campylobacter species from poultry using an enzyme-labelled oligonucleotide DNA probe

scientific article published on 01 February 1991

Immunomagnetic separation and DNA hybridization for detection of enterotoxigenic Escherichia coli in a piglet model

scientific article published on October 1991

Immunomagnetic separation of Salmonella from foods

scientific article published on October 1, 1991

Isolation of cmr, a novel Escherichia coli chloramphenicol resistance gene encoding a putative efflux pump

scientific article

Isolation of enterotoxigenic Yersinia enterocolitica from birds in Norway

scientific article published on April 1982

Laboratory observations on Plesiomonas shigelloides strains isolated from children with diarrhea in Peru

scientific article published on May 1990

Lactoferricin B causes depolarization of the cytoplasmic membrane of Escherichia coli ATCC 25922 and fusion of negatively charged liposomes

scientific article published on 01 March 2001

Legionella extracellular protease activity on chromogenic peptides: a simplified procedure for biochemical enzyme identification

scientific article published on 01 February 1983

Long PCRs of transposons in the structural analysis of genes encoding acquired glycopeptide resistance in enterococci

scientific article published on 01 March 1998

Low faecal carrier rate of vancomycin resistant enterococci in Norwegian hospital patients.

scientific article

Magnetic separation techniques in diagnostic microbiology

scientific article published on January 1994

Molecular subtyping of Vibrio cholerae O1 strains recently isolated from patient, food and environmental samples in Spain

scientific article

Molecular subtyping of toxigenic Vibrio cholerae O139 causing epidemic cholera in India and Bangladesh, 1992-1993.

scientific article

Multiresistant Shigella species from African AIDS patients: antibacterial resistance patterns and application of the E-test for determination of minimum inhibitory concentration

scientific article published on January 1, 1992

Naturally occurring orthopoxviruses: potential for recombination with vaccine vectors

scientific article

Pathogenic Escherichia coli found in food

scientific article published on January 1991

Patterns of extracellular proline-specific endopeptidases in Legionella and Flavobacterium spp. demonstrated by use of chromogenic peptides

scientific article published on June 1, 1983

Plasmid characterization of Salmonella typhimurium transmitted from animals to humans

scientific article published on September 1985

Probes and polymerase chain reaction for detection of food-borne bacterial pathogens

scientific article published on November 1995

Production and characterization of monoclonal antibodies to toxic shock syndrome toxin 1 and use of a monoclonal antibody in a rapid, one-step enzyme-linked immunosorbent assay for detection of picogram quantities of toxic shock syndrome toxin 1.

scientific article published on March 1987

Production of enterotoxin by Escherichia coli at four, twenty-two and thirty-seven degrees centigrade

scientific article published on 01 February 1982

Rapid detection of the methicillin-resistance gene, mecA, in coagulase-negative Staphylococci

scientific article published on January 2001

SEROSURVEY FOR ORTHOPOXVIRUSES IN RODENTS AND SHREWS FROM NORWAY

Specific DNA fragments coding for ST1 and LT1 toxins, and K88 (F4) adhesin in enterotoxigenic Escherichia coli.

scientific article

Stability, persistence, and evolution of plasmid-encoded VanA glycopeptide resistance in enterococci in the absence of antibiotic selection in vitro and in gnotobiotic mice

scientific article published in January 2002

Staphylococcal enterotoxin A, B, and C produced by coagulase-negative strains within the family Micrococcaceae

scientific article published on 01 December 1982

Tetracycline resistance genes in Kenyan hospital isolates of Salmonella typhimurium

scientific article published on July 1, 1992

The Molecular Epidemiology of Cholera in Latin America

scientific article published on March 1, 1993

The cholera epidemic in Latin America

scientific article

Transmission of VanA-type vancomycin-resistant enterococci and vanA resistance elements between chicken and humans at avoparcin-exposed farms.

scientific article

Typeability of Tn1546-like elements in vancomycin-resistant enterococci using long-range PCRs and specific analysis of polymorphic regions

scientific article published on January 2000

Use of polymerase chain reaction for detection of toxigenic Vibrio cholerae O1 strains from the Latin American cholera epidemic

scientific article published on August 1, 1992

Virulence properties of Escherichia coli isolated from Ethiopian patients with acute or persistent diarrhoea

scientific article published on 01 April 1998

[Antibiotic treatment of acute otitis in children]

scientific article published on 01 August 1999

[First infection with vancomycin resistant type VanA enterococci in a Norwegian hospital]

scientific article

[Infections caused by multiresistant enterococci in Norway]

scientific article published on 01 October 1998

[Production and purification of thermolabile enterotoxin of Escherichia coli (author's transl)]

scientific article published on 01 January 1980