Micael Widerström
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View article: Post-screening risk of tuberculosis progression: a three-year retrospective cohort study of asylum seekers in Sweden
Post-screening risk of tuberculosis progression: a three-year retrospective cohort study of asylum seekers in Sweden Open
Risk markers for incident TB were similar to findings previously reported. However, the observed 0.3% annual reactivation risk found among all IGRA-positive individuals in this study was considerably lower compared to earlier findings.
View article: Evaluation of sonication for the detection of periprosthetic joint infection in hip revision arthroplasty: a retrospective observational single-center study of 288 episodes
Evaluation of sonication for the detection of periprosthetic joint infection in hip revision arthroplasty: a retrospective observational single-center study of 288 episodes Open
Background and purpose: Sonication fluid cultures have been proposed as a complementary diagnostic method to intraoperative tissue culture sampling for the diagnosis of periprosthetic joint infection (PJI). We evaluated whether sonication …
View article: Dissemination of Staphylococcus epidermidis in Swedish bovine dairy herds: minimal overlap with human isolates
Dissemination of Staphylococcus epidermidis in Swedish bovine dairy herds: minimal overlap with human isolates Open
Knowledge of zoonotic links between bovine and human isolates of Staphylococcus epidermidis remains limited. The primary aim of this study was to assess the genetic relatedness of S. epidermidis isolates from bovine subclinical mastitis (S…
View article: Completed genome and emergence scenario of the multidrug-resistant nosocomial opportunistic pathogen Staphylococcus epidermidis ST215
Completed genome and emergence scenario of the multidrug-resistant nosocomial opportunistic pathogen Staphylococcus epidermidis ST215 Open
Background A multidrug-resistant genetic lineage of Staphylococcus epidermidis named ST215 causes prosthetic joint infections and other deep surgical site infections in Northern European residents. Increases in the rate and breadth of resi…
View article: Outbreak of Salmonella Typhimurium linked to Swedish pre-washed rocket salad, Sweden, September to November 2022
Outbreak of Salmonella Typhimurium linked to Swedish pre-washed rocket salad, Sweden, September to November 2022 Open
In September 2022, the Public Health Agency of Sweden observed an increase in domestic Salmonella Typhimurium cases through the Swedish electronic notification system, and an outbreak strain was identified with whole genome sequencing. Ove…
View article: Treatment Outcome of Severe Respiratory Type B Tularemia Using Fluoroquinolones
Treatment Outcome of Severe Respiratory Type B Tularemia Using Fluoroquinolones Open
Background Fluoroquinolones lack approval for treatment of tularemia but have been used extensively for milder illness. Here, we evaluated fluoroquinolones for severe illness. Methods In an observational study, we identified case-patients …
View article: Genotypic characterization of Staphylococcus chromogenes and Staphylococcus simulans from Swedish cases of bovine subclinical mastitis
Genotypic characterization of Staphylococcus chromogenes and Staphylococcus simulans from Swedish cases of bovine subclinical mastitis Open
Staphylococcus chromogenes and Staphylococcus simulans are commonly found in intramammary infections (IMI) associated with bovine subclinical mastitis, but little is known about genotypic variation and relatedness within species. This incl…
View article: Genotypic characterization of Staphylococcus chromogenes and Staphylococcus simulans from Swedish cases of bovine sub-clinical mastitis
Genotypic characterization of Staphylococcus chromogenes and Staphylococcus simulans from Swedish cases of bovine sub-clinical mastitis Open
Subclinical (without visible signs) mastitis in dairy cows can be caused by udder infection with staphylococcal bacteria such as Staphylococcus (S.) chromogenes and S. simulans. Little is, however, known about how much the genetics within …
View article: Blood cultures with one venipuncture instead of two: a prospective clinical comparative single-center study including patients in the ICU, haematology, and infectious diseases departments
Blood cultures with one venipuncture instead of two: a prospective clinical comparative single-center study including patients in the ICU, haematology, and infectious diseases departments Open
Blood culture is a key method for diagnosing bloodstream infections. In this prospective study, we aimed to investigate whether blood cultures collected with the one-puncture method results in fewer contaminants, i.e. microorganisms from t…
View article: Increased incidence of late-onset inflammatory bowel disease and microscopic colitis after a <i>Cryptosporidium hominis</i> outbreak
Increased incidence of late-onset inflammatory bowel disease and microscopic colitis after a <i>Cryptosporidium hominis</i> outbreak Open
The incidence of late-onset IBD and MC increased after the Cryptosporidium outbreak. Cryptosporidiosis may be an environmental risk factor for IBD and MC.
View article: Outbreak of Cryptosporidium hominis in northern Sweden: persisting symptoms in a 5-year follow-up
Outbreak of Cryptosporidium hominis in northern Sweden: persisting symptoms in a 5-year follow-up Open
In 2010–2011, a waterborne outbreak of the parasite, Cryptosporidium hominis , affected approximately 27,000 inhabitants in the city of Östersund, Sweden. Previous research suggested that post-infectious symptoms, such as gastrointestinal …
View article: Heterogeneity of Staphylococcus epidermidis in prosthetic joint infections: time to reevaluate microbiological criteria?
Heterogeneity of Staphylococcus epidermidis in prosthetic joint infections: time to reevaluate microbiological criteria? Open
Prosthetic joint infection (PJI) is a feared and challenging to diagnose complication after arthroplasty, with Staphylococcus epidermidis as the major pathogen. One important criteria to define PJI is the detection of phenotypically indist…
View article: Increased Risks of Death and Hospitalization in Influenza/Pneumonia and Sepsis for Individuals Affected by Psychotic Disorders, Bipolar Disorders, and Single Manic Episodes: A Retrospective Cross-Sectional Study
Increased Risks of Death and Hospitalization in Influenza/Pneumonia and Sepsis for Individuals Affected by Psychotic Disorders, Bipolar Disorders, and Single Manic Episodes: A Retrospective Cross-Sectional Study Open
Individuals with severe mental disorders (SMDs) such as psychotic disorders, bipolar disorders, and single manic episodes have increased mortality associated with COVID-19 infection. We set up a population-based study to examine whether in…
View article: Outbreak of Cryptosporidium hominis in northern Sweden: persisting symptoms in a five-year follow-up
Outbreak of Cryptosporidium hominis in northern Sweden: persisting symptoms in a five-year follow-up Open
ObjectivesIn 2010-2011, a waterborne outbreak of the parasite, Cryptosporidium hominis, affected approximately 27,000 inhabitants in the city of Östersund, Sweden. Previous research suggested that post-infectious symptoms, such as gastroin…
View article: Heterogeneity of<i>Staphylococcus epidermidis</i>in prosthetic joint infections: Time to reevaluate microbiological criteria?
Heterogeneity of<i>Staphylococcus epidermidis</i>in prosthetic joint infections: Time to reevaluate microbiological criteria? Open
Prosthetic joint infection (PJI) is a feared complication after arthroplasty with Staphylococcus epidermidis as a major pathogen. One diagnostic criteria for PJI diagnosis is the finding of phenotypically identical organisms based on commo…
View article: Death associated with coronavirus (COVID-19) infection in individuals with severe mental disorders in sweden during the early months of the outbreak
Death associated with coronavirus (COVID-19) infection in individuals with severe mental disorders in sweden during the early months of the outbreak Open
Introduction Individuals with severe mental disorder (SMD) have a higher risk of somatic comorbidity and mortality than the rest of the population. Objectives To assess whether individuals with SMD had a higher risk of death associated wit…
View article: Death Associated With Coronavirus (COVID-19) Infection in Individuals With Severe Mental Disorders in Sweden During the Early Months of the Outbreak—An Exploratory Cross-Sectional Analysis of a Population-Based Register Study
Death Associated With Coronavirus (COVID-19) Infection in Individuals With Severe Mental Disorders in Sweden During the Early Months of the Outbreak—An Exploratory Cross-Sectional Analysis of a Population-Based Register Study Open
Background: Individuals with severe mental disorder (SMD) have a higher risk of somatic comorbidity and mortality than the rest of the population. We set up a population-based study to assess whether individuals with SMD had a higher risk …
View article: Death associated with coronavirus (COVID-19) infection in individuals with severe mental disorders in Sweden during the early months of the outbreak – a exploratory cross-sectional analysis of a population-based register study
Death associated with coronavirus (COVID-19) infection in individuals with severe mental disorders in Sweden during the early months of the outbreak – a exploratory cross-sectional analysis of a population-based register study Open
Background Individuals with severe mental disorder (SMD) have a higher risk of somatic comorbidity and mortality than the rest of the population. We set up a population-based study to assess whether individuals with SMD had a higher risk o…
View article: Significant spread of extensively drug-resistant Acinetobacter baumannii genotypes of clonal complex 92 among intensive care unit patients in a university hospital in southern Iran
Significant spread of extensively drug-resistant Acinetobacter baumannii genotypes of clonal complex 92 among intensive care unit patients in a university hospital in southern Iran Open
This report demonstrates the occurrence and potential spread of closely related XDR genotypes of A. baumannii CC92 within a university hospital in southern Iran. These genotypes were found in the majority of the investigated isolates, show…
View article: Sick leave due to diarrhea caused by contamination of drinking water supply with Cryptosporidium hominis in Sweden: a retrospective study
Sick leave due to diarrhea caused by contamination of drinking water supply with Cryptosporidium hominis in Sweden: a retrospective study Open
We investigated sick leave from work, studies, preschool, and kindergarten occurring between 1 November 2010 and 31 January 2011 and associated with a waterborne outbreak of diarrhea caused by Cryptosporidium hominis in late November 2010 …