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S. Kõljalg · SciRah

Researcher profile · Semantic Scholar

S. Kõljalg

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S. Kõljalg — researcher profile on SciRah

h-index: 19
Works: 44
Citations: 998

Most-cited papers

Antibiotic resistance as an indicator of bacterial chlorhexidine susceptibility.
S. Kõljalg, P. Naaber, M. Mikelsaar
2002Journal of Hospital Infection117 citations
Semantic Scholar
Outbreak caused by two multi-resistant Acinetobacter baumannii clones in a burns unit: emergence of resistance to imipenem.
O. Lyytikäinen, S. Kõljalg, M. Härmä, J. Vuopio-Varkila
1995Journal of Hospital Infection71 citations
Semantic Scholar
Proactive Approach for Safe Use of Antimicrobial Coatings in Healthcare Settings: Opinion of the COST Action Network AMiCI
M. Ahonen, A. Kahru, A. Ivask, K. Kasemets +5 more
2017International Journal of Environmental Research and Public Health65 citations Open access
Semantic Scholar
Influence of aqueous extracts of medicinal plants on surface hydrophobicity of Escherichia coli strains of different origin
Mall Tüuri, Endel Tüuri, S. Kõljalg, M. Mikelsaar
1997Acta Pathologica, Microbiologica et Immunologica Scandinavica (APMIS)63 citations
Semantic Scholar
Impact of Lactobacillus crispatus-containing oral and vaginal probiotics on vaginal health: a randomised double-blind placebo controlled clinical trial.
R. Mändar, G. Sõerunurk, J. Štšepetova, I. Smidt +9 more
2023Beneficial Microbes53 citations Open access
Semantic Scholar
Persistence of Escherichia coli Clones and Phenotypic and Genotypic Antibiotic Resistance in Recurrent Urinary Tract Infections in Childhood
S. Kõljalg, K. Truusalu, Inga Vainumäe, J. Štšepetova +2 more
2008Journal of Clinical Microbiology53 citations Open access
Semantic Scholar
StrainSeeker: fast identification of bacterial strains from raw sequencing reads using user-provided guide trees
Märt Roosaare, Mihkel Vaher, L. Kaplinski, M. Möls +6 more
2017PeerJ51 citations Open access
Semantic Scholar
Comparative Analysis of Gut Microbiota in Centenarians and Young People: Impact of Eating Habits and Childhood Living Environment
E. Sepp, I. Smidt, T. Rööp, J. Štšepetova +8 more
2022Frontiers in Cellular and Infection Microbiology49 citations Open access
Semantic Scholar
Safety of a probiotic cheese containing Lactobacillus plantarum Tensia according to a variety of health indices in different age groups.
E. Songisepp, P. Hutt, M. Rätsep, E. Shkut +7 more
2012Journal of Dairy Science48 citations Open access
Semantic Scholar
A combination of the probiotic and prebiotic product can prevent the germination of Clostridium difficile spores and infection.
M. Rätsep, S. Kõljalg, E. Sepp, I. Smidt +6 more
2017Anaerobe42 citations
Semantic Scholar
Phenotypic and Molecular Epidemiology of ESBL-, AmpC-, and Carbapenemase-Producing Escherichia coli in Northern and Eastern Europe
E. Sepp, R. Andreson, A. Balode, A. Bilozor +13 more
2019Frontiers in Microbiology37 citations Open access
Semantic Scholar
Quantification of Clostridium difficile in Antibiotic-Associated-Diarrhea Patients
P. Naaber, J. Štšepetova, I. Smidt, M. Rätsep +7 more
2011Journal of Clinical Microbiology36 citations Open access
Semantic Scholar
First report of Wohlfahrtiimonas chitiniclastica from soft tissue and bone infection at an unusually high northern latitude
S. Kõljalg, K. Telling, K. Huik, M. Murruste +3 more
2014Folia Microbiologica (Prague)30 citations
Semantic Scholar
Detection of Carbapenemase-Producing Enterobacteriaceae in the Baltic Countries and St. Petersburg Area
Anastasia Pavelkovich, A. Balode, P. Edquist, S. Egorova +14 more
2014BioMed Research International30 citations Open access
Semantic Scholar
Exploration of singular and synergistic effect of xylitol and erythritol on causative agents of dental caries
S. Kõljalg, I. Smidt, A. Chakrabarti, D. Bosscher +1 more
2020Scientific Reports26 citations Open access
Semantic Scholar
Antibiotic usage and resistance - trends in Estonian University Hospitals.
P. Naaber, S. Kõljalg, M. Maimets
2000International Journal of Antimicrobial Agents26 citations
Semantic Scholar
High level bacterial contamination of secondary school students' mobile phones.
S. Kõljalg, Rando Mändar, Tiina Sõber, T. Rööp +1 more
2017GERMS22 citations Open access
Semantic Scholar
Unveiling the etiology of peritonsillar abscess using next generation sequencing
M. Saar, R. Vaikjärv, Ü. Parm, P. Kasenõmm +6 more
2023Annals of Clinical Microbiology and Antimicrobials21 citations Open access
Semantic Scholar
The Escherichia coli phylogenetic group B2 with integrons prevails in childhood recurrent urinary tract infections
S. Kõljalg, K. Truusalu, J. Štšepetova, K. Pai +3 more
2014Acta Pathologica, Microbiologica et Immunologica Scandinavica (APMIS)21 citations
Semantic Scholar
Aerobic vaginitis in the third trimester and its impact on pregnancy outcomes
Anh Thi Chau Nguyen, Na Thi Le Nguyen, T. Hoang, T. T. Nguyen +13 more
2022BMC Pregnancy and Childbirth17 citations Open access
Semantic Scholar
Annals of Clinical Microbiology and Antimicrobials Open Access the Occurrence of Antimicrobial Resistance and Class 1 Integrons among Commensal Escherichia Coli Isolates from Infants and Elderly Persons
E. Sepp, J. Štšepetova, K. Lõivukene, K. Truusalu +3 more
200917 citations
Semantic Scholar
Intestinal lactoflora in Estonian and Norwegian patients with antibiotic associated diarrhea.
E. Sepp, J. Štšepetova, I. Smidt, M. Rätsep +7 more
2011Anaerobe15 citations
Semantic Scholar
In vitro synergy of oxacillin and gentamicin against coagulase‐negative staphylococci from blood cultures of neonates with late‐onset sepsis
T. Brilene, H. Soeorg, Merilin Kiis, E. Sepp +7 more
2013Acta Pathologica, Microbiologica et Immunologica Scandinavica (APMIS)14 citations
Semantic Scholar
Antimicrobial susceptibility and serogroup/serotype distribution of nasopharyngeal isolates of Streptococcus pneumoniae in healthy Estonian children in 1999-2003.
E. Tamm, P. Naaber, M. Maimets, M. Oona +2 more
2007Clinical Microbiology and Infection14 citations Open access
Semantic Scholar
Nasopharyngeal carriage and antibacterial susceptibility of Streptococcus pneumoniae, Haemophilus influenzae and Moraxella catarrhalis in Estonian children.
P. Naaber, E. Tamm, A. Pütsepp, S. Kõljalg +1 more
2000Clinical Microbiology and Infection13 citations Open access
Semantic Scholar
Application of Molecular Methods for Carbapenemase Detection
A. Bilozor, A. Balode, G. Chakhunashvili, T. Chumachenko +20 more
2019Frontiers in Microbiology10 citations Open access
Semantic Scholar
Calibration of fusidic acid disk diffusion susceptibility testing of Staphylococcus aureus
B. Olsson-liljequist, S. Kõljalg, I. Karlsson, G. Kronvall
2002Acta Pathologica, Microbiologica et Immunologica Scandinavica (APMIS)9 citations
Semantic Scholar
Microbiological contamination of the euro currency in Estonia
Karsten Mändar, Tiina Sõber, S. Kõljalg, T. Rööp +2 more
2016Infectious Diseases8 citations
Semantic Scholar
Differences in Extended-Spectrum Beta-Lactamase Producing Escherichia coli Virulence Factor Genes in the Baltic Sea Region
Jana Lillo, K. Pai, A. Balode, M. Makarova +12 more
2014BioMed Research International8 citations Open access
Semantic Scholar
StrainSeeker: fast identification of bacterial strains from unassembled sequencing reads using user-provided guide trees
Märt Roosaare, Mihkel Vaher, L. Kaplinski, M. Möls +6 more
2016bioRxiv5 citations Open access
Semantic Scholar
Effect of erythritol and xylitol on Streptococcus pyogenes causing peritonsillar abscesses
S. Kõljalg, R. Vaikjärv, I. Smidt, T. Rööp +3 more
2021Scientific Reports4 citations Open access
Semantic Scholar
The level of I-FABP and IgA/IgG to beta-lactoglobulin in mothers at risk for gestational diabetes and in their children: association with antibodies to Bifidobacterium adolescentis and Bifidobacterium breve
T. Vorobjova, Aili Tagoma, Celeste Peterson, Ija Talja +9 more
2025Frontiers in Immunology2 citations Open access
Semantic Scholar
Eucalypt Extracts Prepared by a No-Waste Method and Their 3D-Printed Dosage Forms Show Antimicrobial and Anti-Inflammatory Activity
O. Koshovyi, M. Komisarenko, T. Osolodchenko, Andrey Komissarenko +4 more
2024Plants2 citations Open access
Semantic Scholar
Trends in the prevalence and antibiotic susceptibility of anaerobic Gram-negative bacteria causing clinical infections in Estonia
K. Lõivukene, K. Kermes, E. Sepp, P. Naaber +2 more
2023Sri Lankan Journal of Infectious Diseases2 citations Open access
Semantic Scholar
Body site-specific micro- and lactobiota in genitourinary infections during pregnancy
S. Kõljalg, E. Sepp, J. Štšepetova, Eva-Liina Süüden +4 more
2025Frontiers in Cellular and Infection Microbiology1 citations
Semantic Scholar
Antibodies against Clostridium butyricum in the children of mothers at risk for gestational diabetes
Celeste Peterson, Aili Tagoma, K. Alnek, Anu Bärenson +8 more
2025Immunological Medicine1 citations Open access
Semantic Scholar
Culture-based studies of intestinal lactobacilli in young people and centenarians
I. Smidt, T. Rööp, R. Mändar, J. Štšepetova +6 more
2026Frontiers in Microbiology0 citations Open access
Semantic Scholar
Assessing endometrial microbiota in endometriosis: culturomics and sequencing analysis of receptive-phase tissue
A. Canha-Gouveia, C. M. Tenorio, T. Rööp, S. Kõljalg +13 more
2026Current Research in Microbial Sciences0 citations Open access
Semantic Scholar
P-315 Microbiota in endometriosis: culturomics analysis in receptive-phase endometrium
A. Canha-Gouveia, R. Mändar, T. Rööp, S. Kõljalg +11 more
2024Human Reproduction0 citations
Semantic Scholar
Exploration of singular and synergistic effect of xylitol and erythritol on causative agents of dental caries
S. Kõljalg, I. Smidt, A. Chakrabarti, D. Bosscher +1 more
2020Scientific Reports0 citations Open access
Semantic Scholar
Carbapenemases in Gram-Negative Bacteria: Laboratory Detection and Clinical Significance
P. Edquist, S. Egorova, M. Ivanova, L. Kaftyreva +12 more
20140 citations
Semantic Scholar
Clinical impact of usage of Luminex diagnostic panels for sexually transmitted infections (STIs)
P. Naaber, K. Raud, E. Sepp, S. Kõljalg +1 more
20140 citations Open access
Semantic Scholar
Intestinal lacto fl ora in Estonian and Norwegian patients with antibiotic associated diarrhea
E. Sepp, I. Smidt, M. Rätsep, S. Kõljalg +6 more
20110 citations
Semantic Scholar
P1023 Clonality and presence of antibiotic resistance genes of E. coli isolated in recurrent urinary tract infections
K. Truusalu, E. Sepp, J. Shchepetova, S. Kõljalg +4 more
20070 citations
Semantic Scholar

Frequent co-authors

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E. Sepp×22
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E. Sepp — researcher profile on SciRah
P. Naaber×18
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P. Naaber — researcher profile on SciRah
R. Mändar×17
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R. Mändar — researcher profile on SciRah
J. Štšepetova×17
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T. Rööp — researcher profile on SciRah

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I. Smidt — researcher profile on SciRah

M. Mikelsaar×9

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M. Mikelsaar — researcher profile on SciRah

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K. Truusalu — researcher profile on SciRah

K. Lõivukene×6

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K. Lõivukene — researcher profile on SciRah

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M. Rätsep — researcher profile on SciRah

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M. Ivanova — researcher profile on SciRah