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Publications by Signe H. Ringertz

69 publications found

Original articles

Berild D, Abrahamsen TG, Andresen S, Bjørløw E, Haug O, Kossenko IM, Kubar OI, Lelek M, Mintchenko SI, Pyasetskaya MF, Ringertz SH, Sysenko GA (2008)
A controlled intervention study to improve antibiotic use in a Russian paediatric hospital
Int J Antimicrob Agents, 31 (5), 478-83
DOI 10.1016/j.ijantimicag.2008.01.009, PubMed 18343641

Berild D, Mohseni A, Diep LM, Jensenius M, Ringertz SH (2005)
Adjustment of antibiotic treatment according to the results of blood cultures leads to decreased antibiotic use and costs
J Antimicrob Chemother, 57 (2), 326-30
DOI 10.1093/jac/dki463, PubMed 16387751

Jensenius M, Fournier PE, Vene S, Ringertz SH, Myrvang B, Raoult D (2004)
Comparison of immunofluorescence, Western blotting, and cross-adsorption assays for diagnosis of African tick bite fever
Clin Diagn Lab Immunol, 11 (4), 786-8
DOI 10.1128/CDLI.11.4.786-788.2004, PubMed 15242958

Berild D, Smaabrekke L, Halvorsen DS, Lelek M, Stahlsberg EM, Ringertz SH (2003)
Clostridium difficile infections related to antibiotic use and infection control facilities in two university hospitals
J Hosp Infect, 54 (3), 202-6
DOI 10.1016/s0195-6701(03)00149-x, PubMed 12855235

Pretorius AM, Jensenius M, Clarke F, Ringertz SH (2003)
Repellent efficacy of DEET and KBR 3023 against Amblyomma hebraeum (Acari: Ixodidae)
J Med Entomol, 40 (2), 245-8
DOI 10.1603/0022-2585-40.2.245, PubMed 12693855

Berild D, Ringertz SH, Aabyholm G, Lelek M, Fosse B (2002)
Impact of an antibiotic policy on antibiotic use in a paediatric department. Individual based follow-up shows that antibiotics were chosen according to diagnoses and bacterial findings
Int J Antimicrob Agents, 20 (5), 333-8
DOI 10.1016/s0924-8579(02)00203-0, PubMed 12431868

Holm AM, Berild D, Ringertz SH, Håheim LL, Høiby EA (2002)
Occurrence and clinical presentation of systemic pneumococcal infections in an unselected population in Oslo, Norway, between 1993 and 1997
Eur J Clin Microbiol Infect Dis, 21 (6), 465-7
DOI 10.1007/s10096-002-0751-z, PubMed 12111604

Småbrekke L, Berild D, Giaever A, Myrbakk T, Fuskevåg A, Ericson JU, Flaegstad T, Olsvik O, Ringertz SH (2002)
Educational intervention for parents and healthcare providers leads to reduced antibiotic use in acute otitis media
Scand J Infect Dis, 34 (9), 657-9
DOI 10.1080/00365540210147651, PubMed 12374355

Berild D, Ringertz SH, Lelek M (2002)
Appropriate antibiotic use according to diagnoses and bacteriological findings: report of 12 point-prevalence studies on antibiotic use in a university hospital
Scand J Infect Dis, 34 (1), 56-60
DOI 10.1080/00365540110076912, PubMed 11874166

Berild D, Ringertz SH, Lelek M, Fosse B (2001)
Antibiotic guidelines lead to reductions in the use and cost of antibiotics in a university hospital
Scand J Infect Dis, 33 (1), 63-7
DOI 10.1080/003655401750064103, PubMed 11234982

Ringertz SH, Høiby EA, Jensenius M, Maehlen J, Caugant DA, Myklebust A, Fossum K (2000)
Injectional anthrax in a heroin skin-popper
Lancet, 356 (9241), 1574-5
DOI 10.1016/s0140-6736(00)03133-0, PubMed 11075776

Andersen BM, Ringertz SH, Gullord TP, Hermansen W, Lelek M, Norman BI, Nystad MT, Rød KA, Røed RT, Smidesang IJ, Solheim N, Tandberg S, Halsnes R, Wenche Høystad M (2000)
A three-year survey of nosocomial and community-acquired infections, antibiotic treatment and re-hospitalization in a Norwegian health region
J Hosp Infect, 44 (3), 214-23
DOI 10.1053/jhin.1999.0677, PubMed 10706805

Malmborg AS, Ringertz SH (2000)
[Mystery of the disappeared picture]
Lakartidningen, 97 (1-2), 71
PubMed 10668336

Jensenius M, Høiby EA, Berild D, Stiris M, Ringertz SH (2000)
Difficulties in diagnosing Brucella spondylitis
Scand J Infect Dis, 32 (4), 425-6
DOI 10.1080/003655400750045051, PubMed 10959656

Jensenius M, Ringertz SH (1999)
[Hepatitis A is now endemic among Norwegian drug addicts]
Tidsskr Nor Laegeforen, 119 (25), 3724
PubMed 10574046

Muhe L, Tilahun M, Lulseged S, Kebede S, Enaro D, Ringertz S, Kronvall G, Gove S, Mulholland EK (1999)
Etiology of pneumonia, sepsis and meningitis in infants younger than three months of age in Ethiopia
Pediatr Infect Dis J, 18 (10 Suppl), S56-61
DOI 10.1097/00006454-199910001-00010, PubMed 10530575

Jensenius M, Heger B, Dalgard O, Stiris M, Ringertz SH (1999)
[Serious bacterial and fungal infections in intravenous drug addicts]
Tidsskr Nor Laegeforen, 119 (12), 1759-62
PubMed 10380592

Eggesbø HB, Ringertz S, Haanaes OC, Dølvik S, Erichsen A, Stiris M, Kolmannskog F (1999)
CT and MR imaging of the paranasal sinuses in cystic fibrosis. Correlation with microbiological and histopathological results
Acta Radiol, 40 (2), 154-62
DOI 10.3109/02841859909177731, PubMed 10080727

Swedberg G, Ringertz S, Sköld O (1998)
Sulfonamide resistance in Streptococcus pyogenes is associated with differences in the amino acid sequence of its chromosomal dihydropteroate synthase
Antimicrob Agents Chemother, 42 (5), 1062-7
DOI 10.1128/AAC.42.5.1062, PubMed 9593127

Andersen BM, Ree MH, Hermansen W, Ringertz SH, Høystad MW, Lelek M, Normann BI, Gullord TP, Rød KA, Røed R, Solheim N, Tandberg S, Bjørklund U, Hansen KS (1998)
[Hospital hygiene--number of hospital infections reduced last year]
Tidsskr Sykepl, 86 (2), 52-4
PubMed 9485952

Simonsen GS, Andersen BM, Digranes A, Harthug S, Jacobsen T, Lingaas E, Natås OB, Olsvik O, Ringertz SH, Skulberg A, Syversen G, Sundsfjord A (1998)
Low faecal carrier rate of vancomycin resistant enterococci in Norwegian hospital patients
Scand J Infect Dis, 30 (5), 465-8
DOI 10.1080/00365549850161449, PubMed 10066045

Jensenius M, Ringertz SH, Berild D, Bell H, Espinoza R, Grinde B (1998)
Prolonged nosocomial outbreak of hepatitis A arising from an alcoholic with pneumonia
Scand J Infect Dis, 30 (2), 119-23
DOI 10.1080/003655498750003474, PubMed 9730295

Dwyer R, Ringertz S (1997)
Viridans streptococci in blood cultures. Can we see any patterns of species related to patient category? Review of 229 cases of positive cultures with viridans streptococci
APMIS, 105 (12), 972-4
DOI 10.1111/j.1699-0463.1997.tb05109.x, PubMed 9463516

Andersen BM, Ree MH, Hermansen W, Ringertz SH, Høystad MW, Lelek M, Normann BI, Naes B, Gullord TP, Rød KA, Røed R, Smidesang IJ, Solheim S, Tandberg S, Osten PE (1997)
[Hospital hygiene--hospital infections should be reduced]
Tidsskr Sykepl, 85 (13), 53-5
PubMed 9349038

Engervall P, Günther G, Ljungman P, Lönnqvist B, Hast R, Stiernstedt G, Kalin M, Ringertz S, Björkholm M (1996)
Imipenem/cilastatin monotherapy as salvage treatment in febrile neutropenic patients
J Chemother, 8 (5), 382-6
DOI 10.1179/joc.1996.8.5.382, PubMed 8957719

Sundström J, Jacobson K, Munck-Wikland E, Ringertz S (1996)
Pseudomonas aeruginosa in otitis externa. A particular variety of the bacteria?
Arch Otolaryngol Head Neck Surg, 122 (8), 833-6
DOI 10.1001/archotol.1996.01890200023004, PubMed 8703384

Engervall P, Günther G, Ljungman P, Lönnqvist B, Hast R, Stiernstedt G, Kalin M, Ringertz S, Bjökholm M (1996)
Trimethoprim-sulfamethoxazole plus amikacin versus ceftazidime monotherapy as empirical treatment in patients with neutropenia and fever
Scand J Infect Dis, 28 (3), 297-303
DOI 10.3109/00365549609027177, PubMed 8863366

Bäckman M, Jacobson K, Ringertz S (1995)
The virgin population of Neisseria gonorrhoeae in Stockholm has decreased and antimicrobial resistance is increasing
Genitourin Med, 71 (4), 234-8
DOI 10.1136/sti.71.4.234, PubMed 7590715

Engervall P, Ringertz S, Hagman E, Skogman K, Björkholm M (1995)
Change of central venous catheter dressings twice a week is superior to once a week in patients with haematological malignancies
J Hosp Infect, 29 (4), 275-86
DOI 10.1016/0195-6701(95)90274-0, PubMed 7658007

Jonsson B, Karell AC, Ringertz S, Rylander M, Faxelius G (1994)
Neonatal Ureaplasma urealyticum colonization and chronic lung disease
Acta Paediatr, 83 (9), 927-30
DOI 10.1111/j.1651-2227.1994.tb13174.x, PubMed 7819688

Ringertz S, Muhe L, Krantz I, Hathaway A, Shamebo D, Freij L, Wall S, Kronvall G (1993)
Prevalence of potential respiratory disease bacteria in children in Ethiopia. Antimicrobial susceptibility of the pathogens and use of antibiotics among the children
Acta Paediatr, 82 (10), 843-8
DOI 10.1111/j.1651-2227.1993.tb17624.x, PubMed 8241643

Olsson-Liljequist B, Larsson P, Ringertz S, Löfdahl S (1993)
Use of a DNA hybridization method to verify results of screening for methicillin resistance in staphylococci
Eur J Clin Microbiol Infect Dis, 12 (7), 527-33
DOI 10.1007/BF01970958, PubMed 8404913

Nyström B, Ransjö U, Ringertz S, Faxelius G, Tunell R, Ohman G, Wilton J, Pfaller MA (1992)
Colonization with coagulase-negative staphylococci in two neonatal units
J Hosp Infect, 22 (4), 287-98
DOI 10.1016/0195-6701(92)90014-d, PubMed 1363108

Carlos CC, Ringertz S, Rylander M, Huovinen P, Faxelius G (1991)
Nosocomial Staphylococcus epidermidis septicaemia among very low birth weight neonates in an intensive care unit
J Hosp Infect, 19 (3), 201-7
DOI 10.1016/0195-6701(91)90224-v, PubMed 1685508

Kronvall G, Ringertz S, Nyström S, Rylander M, Theodorsson E (1991)
Comparison of 30 microgram and 120 microgram gentamicin disks for the prediction of gentamicin resistance in Enterococcus faecalis
APMIS, 99 (10), 887-92
DOI 10.1111/j.1699-0463.1991.tb01275.x, PubMed 1930962

Ringertz S, Rylander M, Kronvall G (1991)
Disk diffusion method for susceptibility testing of Neisseria gonorrhoeae
J Clin Microbiol, 29 (8), 1604-9
DOI 10.1128/jcm.29.8.1604-1609.1991, PubMed 1837031

Aufwerber E, Ringertz S, Ransjö U (1991)
Routine semiquantitative cultures and central venous catheter-related bacteremia
APMIS, 99 (7), 627-30
DOI 10.1111/j.1699-0463.1991.tb01237.x, PubMed 2069804

Thore M, Faxelius G, Hedin G, Johnsson H, Ringertz S, Schröder S, Schwan A, Thid S, Ohrner Y (1991)
The role of a commercial latex agglutination test in the diagnosis of group B streptococcal infection in neonates
Acta Paediatr Scand, 80 (2), 167-72
DOI 10.1111/j.1651-2227.1991.tb11829.x, PubMed 2035307

Ringertz S, Olsson-Liljequist B, Kronvall G (1990)
Antimicrobial susceptibility testing of Haemophilus influenzae. Improvement of accuracy of the disc diffusion test
J Antimicrob Chemother, 26 (4), 479-89
DOI 10.1093/jac/26.4.479, PubMed 2254221

Malmborg AS, Ekwall E, Myrbäck KE, Ringertz S (1990)
Comparison of Oxoid Signal and biphasic blood culture systems in clinical practice
Scand J Infect Dis, 22 (1), 117-8
DOI 10.3109/00365549009023131, PubMed 2181627

Ringertz S, Bellete B, Karlsson I, Ohman G, Gedebou M, Kronvall G (1990)
Antibiotic susceptibility of Escherichia coli isolates from inpatients with urinary tract infections in hospitals in Addis Ababa and Stockholm
Bull World Health Organ, 68 (1), 61-8
PubMed 2189587

Björklind A, Ringertz S, Kronvall G (1989)
Types of interpretive errors in susceptibility testing. Zone breakpoints for norfloxacin disk diffusion testing
APMIS, 97 (10), 941-8
DOI 10.1111/j.1699-0463.1989.tb00502.x, PubMed 2803757

Ringertz S, Björklind A, Kronvall G (1989)
Species-specific interpretive breakpoints for ciprofloxacin disk diffusion susceptibility testing
Scand J Infect Dis Suppl, 60, 46-53
PubMed 2502836

Eshali H, Ringertz S, Nyström S, Faxelius G (1989)
Septicaemia with coagulase negative staphylococci in a neonatal intensive care unit. Risk factors for infection, and antimicrobial susceptibility of the bacterial strains
Acta Paediatr Scand Suppl, 360, 127-34
DOI 10.1111/j.1651-2227.1989.tb11293.x, PubMed 2642248

Kronvall G, Ringertz S, Karlsson I, Göransson E, Dornbusch K (1988)
Laboratory- and species-specific interpretive breakpoints for disk diffusion tests of chloramphenicol susceptibility of Haemophilus influenzae
Antimicrob Agents Chemother, 32 (10), 1484-9
DOI 10.1128/AAC.32.10.1484, PubMed 3263831

Ringertz S, Kronvall G (1988)
On the theory of the disk diffusion test. Evidence for a non-linear relationship between critical concentration and MIC, and its practical implications for susceptibility testing of Haemophilus influenzae
APMIS, 96 (6), 484-90
PubMed 3260786

Faxelius G, Bremme K, Kvist-Christensen K, Christensen P, Ringertz S (1988)
Neonatal septicemia due to group B streptococci--perinatal risk factors and outcome of subsequent pregnancies
J Perinat Med, 16 (5-6), 423-30
DOI 10.1515/jpme.1988.16.5-6.423, PubMed 3071602

Ringertz S, Dornbusch K (1988)
In vitro susceptibility to tetracycline and doxycycline in clinical isolates of Haemophilus influenzae
Scand J Infect Dis Suppl, 53, 7-11
PubMed 3262234

Gedebou M, Kronvall G, Habte-Gabr E, Ringertz S (1987)
The bacteriology of nosocomial infections at Tikur Anbessa Teaching Hospital, Addis Ababa
Acta Pathol Microbiol Immunol Scand B, 95 (6), 331-6
DOI 10.1111/j.1699-0463.1987.tb03134.x, PubMed 3439462

Faxelius G, Ringertz S (1987)
Neonatal septicemia in Stockholm
Eur J Clin Microbiol, 6 (3), 262-5
DOI 10.1007/BF02017609, PubMed 3305005

Ringertz S, Kronvall G (1987)
Increased use of erythromycin causes resistance in Haemophilus influenzae
Scand J Infect Dis, 19 (2), 247-56
DOI 10.3109/00365548709032407, PubMed 3497435

Ringertz S, Eriksson B, Malmborg AS, Nyström S, Wretlind B (1985)
Use of the antimicrobial removal device prior to blood culture in patients on antibiotic therapy
Eur J Clin Microbiol, 4 (6), 544-7
DOI 10.1007/BF02013391, PubMed 4092699

Ringertz S, Ringertz O (1982)
Antimicrobial effect of isopropyl myristate when used as a solvent in sterility testing
Pharm Acta Helv, 57 (7), 193-5
PubMed 7122648

Ringertz S, Rockhill RC, Ringertz O (1981)
Susceptibility of Campylobacter fetus subsp. jejuni, isolated from patients in Jakarta, Indonesia to ten antimicrobial agents
J Antimicrob Chemother, 8 (4), 333-6
DOI 10.1093/jac/8.4.333, PubMed 7298551

Ringertz S, Rockhill RC, Ringertz O, Sutomo A (1980)
Campylobacter fetus subsp. jejuni as a cause of gastroenteritis in Jakarta, Indonesia
J Clin Microbiol, 12 (4), 538-40
DOI 10.1128/jcm.12.4.538-540.1980, PubMed 7419706

Review articles

Ringertz S, Olsson-Liljequist B, Kahlmeter G, Kronvall G (1997)
Antimicrobial susceptibility testing in Sweden. II. Species-related zone diameter breakpoints to avoid interpretive errors and guard against unrecognized evolution of resistance
Scand J Infect Dis Suppl, 105, 8-12
PubMed 9435026

Kahlmeter G, Olsson-Liljequist B, Ringertz S (1997)
Antimicrobial susceptibility testing in Sweden. IV. Quality assurance
Scand J Infect Dis Suppl, 105, 24-31
PubMed 9435028

Kronvall G, Ringertz S (1991)
Antibiotic disk diffusion testing revisited. Single strain regression analysis. Review article
APMIS, 99 (4), 295-306
DOI 10.1111/j.1699-0463.1991.tb05153.x, PubMed 2036212

Books

Berild D, Ringertz SH, Jensenius M (1998)
Antibiotika: behandling og profylakse
Aker sykehus, [Oslo], 74 s.
BIBSYS 981950477

Book chapters

Jensenius M, Fournier PE, Vene S, Ringertz SH, Myrvang B, Raoult D (2004)
Comparison of immunofluorescence, western blotting and cross-adsorption assays for diagnosis of African tick bite fever
In Clinical and diagnostic laboratory immunology, American Society for Microbiology, Washington, 11(2004)4, S. 786-88
BIBSYS 051805006

Berild D, Småbrekke L, Halvorsen DS, Lelek M, Stahlsberg EM, Ringertz SH (2003)
Clostridium difficile infections related to antibiotic use and infection control facilities in two university hospitals
In Journal of hospital infection, Published for the Hospital Infection Society by Academic Press, London, 54(2003)3, s.202-6
BIBSYS 041706927

Holm AM, Berild D, Ringertz SH, Haheim LL, Høiby EA (2002)
Occurence and clinical presentation of systemic pneumococcal infections in an unselected population in Oslo, Norway, between 1993 and 1997
In European journal of clinical microbiology & infectious diseases, Vieweg, Wiesbaden, 21(2002)nr 6, s. 465-467
BIBSYS 031275397

Småbrekke L, Berild D, Giæver A, Myrbakk TK, Fuskevåg AK, Ericson JU, Flægstad T, Olsvik O, Ringertz SH (2002)
Educational intervention for parents and healthcare providers leads to reduced antibiotic use in acute otitis media
In Scandinavian journal of infectious diseases, Taylor & Francis, Basingstoke, 34(2002)nr 9, s. 657-659
BIBSYS 031275656

Berild D, Ringertz SH, Lelek M (2002)
Appropriate antibiotic use according to diagnoses and bacteriological findings: report of 12 point-prevalence studies in antibiotic use in a university hospital
In Scandinavian journal of infectious diseases, Taylor & Francis, Basingstoke, 34(2002)nr 1, s. 56-60
BIBSYS 031274498

Harthug S, Jureen R, Mohn SC, Digranes A, Simonsen GS, Sundsfjord A, Langeland N, Ringertz SH (2002)
The prevalence of faecal carriage of ampicillin-resistantand highlevel gentamicin-resistant enterococci among inpatients at 10 major Norwegian hospitals
In Journal of hospital infection, Published for the Hospital Infection Society by Academic Press, London, 50(2002)nr 2, s. 145-154
BIBSYS 031274889

Berild D, Ringertz SH, Lelek M, Fosse BA (2001)
Antibiotic guidelines lead to reductions in the use and cost of antibiantibiotics in a university hospital
In Scandinavian journal of infectious diseases, Taylor & Francis, Basingstoke, 33(2001)nr 1, s. 63-7
BIBSYS 022071660

Jensenius M, Høiby EA, Berild D, Stiris M, Ringertz SH (2000)
Difficulties in diagnosing Brucella spondylitis
In Scandinavian journal of infectious diseases, Taylor & Francis, Basingstoke, 32(2000)nr 4, s. 425-426
BIBSYS 010765743

Ringertz SH, Høiby EA, Jensenius M, Mæhlen J, Caugant DA, Myklebust A, Fossum K (2000)
Injectional anthrax in a heroin skin-popper
In Lancet, Lancet Ltd., London, 356(2000)nr 9241, s.1574-1575
BIBSYS 01078134x

Ringertz SH, Myklebust A, Jensenius M, Mæhlen J, Fossum K, Hoel T, Blystad H, Høiby EA (2000)
Sannsynlig systematisk anthrax hos stoffmisbrukere i Oslokrever oppmerksomhet
In MSIS-rapport, Nasjonalt folkehelseinstitutt, Avdeling for infeksjonsovervåking, Oslo, 28(2000)nr 17, s.1
BIBSYS 010781404