Anders Ternhag

About me
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About me

I am a consultant and associate professor in infectious diseases working at Karolinska University Hospital and the Public Health Agency of Sweden.

Research

I am interested in healthcare-associated infections, antibiotic use, ESBL-producing bacteria, and improving access to new and old antibiotics. I am locally responsible for the POS-cUTI clinical observational study organized by ECRAID.

Articles

Article: JAMA NETWORK OPEN. 2023;6(11):e2341936

Nosocomial SARS-CoV-2 Infections and Mortality During Unique COVID-19 Epidemic Waves.

Dave N; Sjöholm D; Hedberg P; Ternhag A; Granath F; Verberk JDM; Johansson AF; van der Werff SD; Nauclér P
Article: ECLINICALMEDICINE. 2023;63:102184

Oral streptococcal infective endocarditis among individuals at high risk following dental treatment: a nested case-crossover and case-control study.

Vähäsarja N; Lund B; Ternhag A; Götrick B; Olaison L; Hultin M; Krüger Weiner C; Naimi-Akbar A
Article: APPLIED HEALTH ECONOMICS AND HEALTH POLICY. 2022;20(6):835-843

Cost-Effectiveness Analysis of Temocillin Treatment in Patients with Febrile UTI Accounting for the Emergence of Antibiotic Resistance.

Larsson S; Edlund C; Nauclér P; Svensson M; Ternhag A
Article: INTERNATIONAL JOURNAL OF INFECTIOUS DISEASES. 2022;124:181-186

The effect of absent or deferred antibiotic treatment on complications of common infections in primary care.

Dahlén E; Collin J; Hellman J; Norman C; Nauclér P; Ternhag A
Article: CLINICAL INFECTIOUS DISEASES. 2022;75(7):1171-1178

Infective Endocarditis Among High-risk Individuals Before and After the Cessation of Antibiotic Prophylaxis in Dentistry: A National Cohort Study.

Vähäsarja N; Lund B; Ternhag A; Götrick B; Olaison L; Hultin M; Warnqvist A; Krüger Weiner C; Naimi-Akbar A
Article: EUROPEAN JOURNAL OF CLINICAL MICROBIOLOGY & INFECTIOUS DISEASES. 2022;41(7):1093-1098

Evaluation of a pneumonia multiplex PCR panel for detection of bacterial respiratory tract pathogens from serial specimens collected from hospitalized COVID-19 patients.

Tellapragada C; Ydsten KA; Ternhag A; Giske CG
Article: CRITICAL CARE MEDICINE. 2022;50(5):825-836

Ventilator-Associated Lower Respiratory Tract Bacterial Infections in COVID-19 Compared With Non-COVID-19 Patients.

Hedberg P; Ternhag A; Giske CG; Strålin K; Özenci V; Johansson N; Spindler C; Hedlund J; Mårtensson J; Nauclér P
Article: BMC PUBLIC HEALTH. 2022;22(1):527

Production loss and sick leave caused by antibiotic resistance: a register-based cohort study.

Larsson S; Svensson M; Ternhag A
Article: LANCET INFECTIOUS DISEASES. 2022;22(3):390-400

The clinical and microbiological efficacy of temocillin versus cefotaxime in adults with febrile urinary tract infection, and its effects on the intestinal microbiota: a randomised multicentre clinical trial in Sweden.

Edlund C; Ternhag A; Skoog Ståhlgren G; Edquist P; Östholm Balkhed Å; Athlin S; Månsson E; Tempé M; Bergström J; Giske CG; Hanberger H; Temocillin Study Group
Article: BMC PUBLIC HEALTH. 2022;22(1):252

Reduced dispensing of prescribed antibiotics during the Covid-19 pandemic has not increased severe complications from common infections.

Norman C; Svensson M; Schmidt I; Bergfeldt VS; Obeid R; Ternhag A; Struwe JL
Article: THORAX. 2022;77(2):154-163

Clinical phenotypes and outcomes of SARS-CoV-2, influenza, RSV and seven other respiratory viruses: a retrospective study using complete hospital data.

Hedberg P; Karlsson Valik J; van der Werff S; Tanushi H; Requena Mendez A; Granath F; Bell M; Mårtensson J; Dyrdak R; Hertting O; Färnert A; Ternhag A; Naucler P
Article: BMC INFECTIOUS DISEASES. 2022;22(1):108

Bacterial co-infections in community-acquired pneumonia caused by SARS-CoV-2, influenza virus and respiratory syncytial virus.

Hedberg P; Johansson N; Ternhag A; Abdel-Halim L; Hedlund J; Nauclér P
Article: ANTIMICROBIAL STEWARDSHIP AND HEALTHCARE EPIDEMIOLOGY. 2022;2(1):e43

The accuracy of fully automated algorithms for surveillance of healthcare-onset Clostridioides difficile infections in hospitalized patients.

van der Werff SD; Fritzing M; Tanushi H; Henriksson A; Dalianis H; Ternhag A; Färnert A; Nauclér P
Article: CRITICAL CARE. 2021;25(1):291

Cerebrospinal fluid cell count variability is a major confounding factor in external ventricular drain-associated infection surveillance diagnostics: a prospective observational study.

Bådholm M; Blixt J; Glimåker M; Ternhag A; Hedlund J; Nelson DW
Article: JOURNAL OF HOSPITAL INFECTION. 2021;110:139-147

The accuracy of fully automated algorithms for surveillance of healthcare-associated urinary tract infections in hospitalized patients.

van der Werff SD; Thiman E; Tanushi H; Valik JK; Henriksson A; Ul Alam M; Dalianis H; Ternhag A; Nauclér P
Article: MSYSTEMS. 2021;6(2):e01302-e01320

Tonsillar Microbiota: a Cross-Sectional Study of Patients with Chronic Tonsillitis or Tonsillar Hypertrophy.

Wu S; Hammarstedt-Nordenvall L; Jangard M; Cheng L; Radu SA; Angelidou P; Zha Y; Hamsten M; Engstrand L; Du J; Ternhag A
Article: INFECTIOUS DISEASES. 2020;52(6):419-422

Fatal encephalitis associated with coronavirus OC43 in an immunocompromised child.

Nilsson A; Edner N; Albert J; Ternhag A
Article: JOURNAL OF ORAL MICROBIOLOGY. 2020;12(1):1768342

Incidence of infective endocarditis caused by viridans group streptococci in Sweden - effect of cessation of antibiotic prophylaxis in dentistry for risk individuals.

Vähäsarja N; Lund B; Ternhag A; Götrick B; Olaison L; Hultin M; Krüger Weiner C; Naimi-Akbar A
Article: EUROSURVEILLANCE. 2020;25(2):39-51

Mycoplasma pneumoniae infections, 11 countries in Europe and Israel, 2011 to 2016.

Beeton ML; Zhang X-S; Uldum SA; Bébéar C; Dumke R; Gullsby K; Ieven M; Loens K; Nir-Paz R; Pereyre S; Spiller OB; Chalker VJ; ESCMID Study Group for Mycoplasma and Chlamydia In; ESCMID Study Group for Mycoplasma and Chlamydia In
Article: CLINICAL MICROBIOLOGY AND INFECTION. 2019;25(11):1408-1414

Risk factors for community-onset bloodstream infection with extended-spectrum β-lactamase-producing Enterobacteriaceae: national population-based case-control study.

Isendahl J; Giske CG; Tegmark Wisell K; Ternhag A; Nauclér P
Article: EUROPEAN JOURNAL OF PUBLIC HEALTH. 2019;29(3):392-396

A microsimulation model projecting the health care costs for resistance to antibacterial drugs in Sweden.

Larsson S; Prioux M; Fasth T; Ternhag A; Struwe J; Dohnhammar U; Brouwers L
Article: CLINICAL INFECTIOUS DISEASES. 2019;68(4):641-649

Temporal Dynamics and Risk Factors for Bloodstream Infection With Extended-spectrum β-Lactamase-producing Bacteria in Previously-colonized Individuals: National Population-based Cohort Study.

Isendahl J; Giske CG; Hammar U; Sparen P; Tegmark Wisell K; Ternhag A; Nauclér P
Article: LAKARTIDNINGEN. 2018;115:EWPI

Aktivt uppsökande infektionskonsult bör införas på sjukhus - Automatiserad riskbedömning ger möjlighet till prevention – också för övervakning av vårdrelaterade infektioner.

Ternhag A; Nauclér P
Article: BMJ OPEN. 2017;7(11):e016221

Antibiotic use and bacterial complications following upper respiratory tract infections: a population-based study.

Cars T; Eriksson I; Granath A; Wettermark B; Hellman J; Norman C; Ternhag A
Article: INFECTIOUS DISEASES. 2017;49(8):588-593

Human papillomavirus prevalence in mouthwashes of patients undergoing tonsillectomy shows dominance of HPV69, without the corresponding finding in the tonsils.

Grün N; Mbuya W; Ternhag A; Ramqvist T; Ahlberg A; Jangard M; Dalianis T; Hammarstedt-Nordenvall L
Article: CLINICAL MICROBIOLOGY AND INFECTION. 2017;23(4):247-252

Narrow-spectrum ß-lactam monotherapy in hospital treatment of community-acquired pneumonia: a register-based cohort study.

Rhedin S; Galanis I; Granath F; Ternhag A; Hedlund J; Spindler C; Naucler P
Journal article: EUROPEAN JOURNAL OF PUBLIC HEALTH. 2016;26(suppl_1)

A microsimulation model forecasting the health care costs associated with increasing MRSA infections

Prioux M; Brouwers L; Dohnhammar U; Fasth T; Larsson S; Struwe J; Ternhag A
Article: ACTA PAEDIATRICA. 2015;104(10):1035-1038

Antibiotic consumption among a Swedish cohort of children born in 2006.

Hellman J; Grape M; Ternhag A
Article: VASCULAR AND ENDOVASCULAR SURGERY. 2015;49(3-4):79-83

The Impact of Stent Graft Material on the Inflammatory Response After EVAR.

Sartipy F; Lindström D; Gillgren P; Ternhag A
Article: SCANDINAVIAN JOURNAL OF INFECTIOUS DISEASES. 2014;46(12):888-896

Antibiotic consumption in relation to socio-demographic factors, co-morbidity, and accessibility of primary health care.

Ternhag A; Grünewald M; Nauclér P; Wisell KT
Article: ANNALS OF VASCULAR SURGERY. 2014;28(4):866-873

The role of procalcitonin in postimplantation syndrome after EVAR: a pilot study.

Sartipy F; Lindström D; Gillgren P; Ternhag A
Article: JOURNAL OF GLOBAL ANTIMICROBIAL RESISTANCE. 2014;2(1):39-42

A pilot study of risk adjustment for benchmarking antibiotic use between hospitals in Sweden.

Norberg S; Struwe J; Grunewald M; Ternhag A
Journal article: LAKARTIDNINGEN. 2014;111(7):268-269

[Aminoglycosides are effective--but oto- and nephrotoxic. Knowledge base from the reference group for antibiotic issues on benefit-risk with aminoglycosides].

Ternhag A; Giske CG; Hanberger H
Journal article: NEW ENGLAND JOURNAL OF MEDICINE. 2013;369(12):1175-1176

More on U.S. outpatient antibiotic prescribing, 2010.

Hicks LA; Taylor TH; Hunkler RJ
Article: APMIS. 2013;121(1):72-78

The relative importance of Staphylococcus saprophyticus as a urinary tract pathogen: distribution of bacteria among urinary samples analysed during 1 year at a major Swedish laboratory.

Eriksson A; Giske CG; Ternhag A
Article: PLOS ONE. 2013;8(7):e67519

A nationwide cohort study of mortality risk and long-term prognosis in infective endocarditis in Sweden.

Ternhag A; Cederström A; Törner A; Westling K
Article: EUROSURVEILLANCE. 2012;17(6):20082-13

Antibiotic prescriptions and laboratory-confirmed cases of Mycoplasma pneumoniae during the epidemic in Sweden in 2011.

Linde A; Ternhag A; Torner A; Claesson B
Journal article: LAKARTIDNINGEN. 2012;109(3):108-109

[National recommendations for the treatment of pharyngotonsillitis are valid].

Cars O; Mölstad S; Norman C; Ternhag A; André M; Erntell M
Article: EMERGING INFECTIOUS DISEASES. 2008;14(1):143-148

Short- and long-term effects of bacterial gastrointestinal infections.

Ternhag A; Törner A; Svensson A; Ekdahl K; Giesecke J
Article: EMERGING INFECTIOUS DISEASES. 2006;12(2):337-339

Salmonella-associated deaths, Sweden, 1997-2003.

Ternhag A; Törner A; Ekdahl K; Giesecke J
Article: BMC INFECTIOUS DISEASES. 2005;5:70

Mortality following Campylobacter infection: a registry-based linkage study.

Ternhag A; Törner A; Svensson A; Giesecke J; Ekdahl K
Journal article: LAKARTIDNINGEN. 2005;102(14):1046-1047

[Nipah virus--another product from the Asian "virus factory"].

Ternhag A; Penttinen P
Article: EUROSURVEILLANCE. 2004;9(7):19-22

Basic Surveillance Network, a European database for surveillance data on infectious diseases.

Ternhag A; Tegnell A; Lesko B; Skaerlund K; Penttinen P
Article: EUROSURVEILLANCE. 2004;9(7):1-2

Basic Surveillance Network, a European database for surveillance data on infectious diseases.

Ternhag A; Tegnell A; Lesko B; Skaerlund K; Penttinen P
Journal article: LAKARTIDNINGEN. 2004;101(8):686-687

[Good guideline compliance among patients and health services when it comes to suspected SARS infection].

Ternhag A; Janzon R; Ekdahl K; Giesecke J
Journal article: LAKARTIDNINGEN. 2004;101(8):683-685

[Avian influenza--next global infection threat from Asia].

Ekdahl K; Penttinen P; Ternhag A; Linde A; Giesecke J
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All other publications

Letter: JAMA INTERNAL MEDICINE. 2023;183(10):1178

Immortal Time Bias Possibly Affecting Fludrocortisone-Hydrocortisone Findings.

Valik JK; Ternhag A; Nauclér P
Conference publication: INFECTION CONTROL AND HOSPITAL EPIDEMIOLOGY. 2020;41:S39

HAI-Proactive: Development of an Automated Surveillance System for Healthcare-Associated Infections in Sweden

Naucler P; van der Werff SD; Valik J; Ward L; Ternhag A; Tanushi H; Mougkou A; Sparrelid E; Farnert A; Mogensen M; Henriksson A; Dalianis H; Pickering B; Herasevich V; Johansson A; Thiman E
Review: BMJ QUALITY & SAFETY. 2020;29(9):735-745

Validation of automated sepsis surveillance based on the Sepsis-3 clinical criteria against physician record review in a general hospital population: observational study using electronic health records data.

Valik JK; Ward L; Tanushi H; Müllersdorf K; Ternhag A; Aufwerber E; Färnert A; Johansson AF; Mogensen ML; Pickering B; Dalianis H; Henriksson A; Herasevich V; Nauclér P
Letter: JOURNAL OF DENTAL RESEARCH. 2020;99(7):863

Letter to the Editor: "Risk of Adverse Reactions to Oral Antibiotics Prescribed by Dentists".

Smith AJ; Palmer NOA; Seaton RA; Ternhag A
Review: UPSALA JOURNAL OF MEDICAL SCIENCES. 2014;119(2):154-161

Antibiotic consumption and antibiotic stewardship in Swedish hospitals.

Hanberger H; Skoog G; Ternhag A; Giske CG
Letter: NEW ENGLAND JOURNAL OF MEDICINE. 2013;369(12):1175

More on U.S. outpatient antibiotic prescribing, 2010.

Ternhag A; Hellman J
Letter: SCANDINAVIAN JOURNAL OF INFECTIOUS DISEASES. 2013;45(8):655-656

Rational use of aminoglycosides - author response.

Hanberger H; Fredriksson M; Ternhag A; Giske CG
Review: SCANDINAVIAN JOURNAL OF INFECTIOUS DISEASES. 2013;45(3):161-175

Rational use of aminoglycosides--review and recommendations by the Swedish Reference Group for Antibiotics (SRGA).

Hanberger H; Edlund C; Furebring M; G Giske C; Melhus A; Nilsson LE; Petersson J; Sjölin J; Ternhag A; Werner M; Eliasson E; Swedish Reference Group for Antibiotics
Review: LAKARTIDNINGEN. 2010;107(15):985-988

[Antibiotics or not--procalcitonin can guide therapeutic choices. At least at the emergency department for adults with lower respiratory tract infection].

Ternhag A; Cars O; Norman C; Struwe J
Letter: BMJ-BRITISH MEDICAL JOURNAL. 2009;338:b2064

Larval therapy for leg ulcers. Compression may be key.

Ternhag A
Editorial comment: CLINICAL INFECTIOUS DISEASES. 2007;44(5):696-700

A meta-analysis on the effects of antibiotic treatment on duration of symptoms caused by infection with Campylobacter species.

Ternhag A; Asikainen T; Giesecke J; Ekdahl K
Editorial comment: EUROPEAN JOURNAL OF EPIDEMIOLOGY. 2005;20(8):653-655

Size matters -- patient organisations exaggerate prevalence numbers.

Ternhag A; Asikainen T; Giesecke J

Employments

Affiliated to Research, Department of Medicine, Karolinska Institutet, 2023-2025

Degrees and Education

Associate Professor, Infectious Disease, MedS, Karolinska Institute, 2018
Doctor Of Philosophy, Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, 2008
University Medical Degree, Karolinska Institutet, 1999

About me

Research

Articles

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Degrees and Education

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