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The incidence of multidrug-resistant (MDR) Salmonella Typhimurium infections in humans, and in particular MDR definitive phage type 104 (DT104), has increased substantially in many countries in the last 2 decades, [...]

In a matched cohort study, we determined the death rates associated with drug resistance in Salmonella Typhimurium. We linked data from the Danish Surveillance Registry for Enteric Pathogens with the [...]

Aim: This Danish national guideline describes the treatment of adult patients with Clostridioides (formerly Clostridium) difficile (CD) infection and the use of faecal microbiota transplantation (FMT). It suggests minimum standard for implementing an FMT service. Method: Four scientific societies appointed members for a working group which conducted a systematic literature review and agreed on the text and recommendations. All clinical recommendations were evalluated for evidence level and grade of recommendation. Results: In CD infection, the use of marketed and experimental antibiotics as well as microbiota-based therapies including FMT are described. An algorithm for evaluating treatment effect is suggested. The organisation of FMT, donor recruitment and screening, laboratory preparation, clinical application and follow-up are described. Conclusion: Updated evidence for the treatment of CD infection and the use of FMT is provided. [ABSTRACT FROM AUTHOR]

Abstract Background Salmonella enterica subsp. enterica is one of the leading food-borne pathogens in the USA and European countries. Outcome of human Salmonella serotype Typhimurium infections ranges from mild self-limiting diarrhoea to severe diarrhoea that requires hospitalization. Increased knowledge of the mechanisms that are responsible for causing infection and especially the severity of infection is of high interest. Results Strains were selected from patients with mild infections (n = 9) and patients with severe infections (n = 9) and clinical data allowed us to correct for known underlying diseases. Additionally, outbreak isolates (n = 3) were selected. Strains were analyzed on a DNA-DNA microarray for presence or absence of 281 genes covering marker groups of genes related to pathogenicity, phages, antimicrobial resistance, fimbriae, mobility, serotype and metabolism. Strains showed highly similar profiles when comparing virulence associated genes, but differences between strains were detected in the prophage marker group. The Salmonella virulence plasmid was present in 72% of the strains, but presence or absence of the virulence plasmid did not correspond to disease symptoms. A dendrogram clustered strains into four groups. Clustering confirmed DT104 as being a clonal phagetype. Clustering of the remaining strains was mainly correlated to presence or absence of the virulence plasmid and mobile elements such as transposons. Each of the four clusters in the tree represented an almost equal amount of strains causing severe or mild symptoms of infection. Conclusions We investigated clinical significance of known virulence factors of Salmonella serotype Typhimurium strains causing different disease symptoms, and conclude that the few detected differences in Salmonella serotype Typhimurium do not affect outcome of human disease.

In Reply to Dahl: The emergence and spread of multidrug-resistant Salmonella enterica serovar Typhimurium DT104 (MDR DT104) contributed to an international increase in antimicrobial drug resistance in S. Typhimurium in [...]

Non-typhoidal Salmonella (NTS) and Campylobacter are common causes of diarrhoea in human immunodeficiency virus (HIV)-positive patients. To investigate if incidence has changed since the introduction of highly active antiretroviral therapy (HAART), we combined data from The Danish Surveillance Registry for Enteric Pathogens and The Danish National Hospital Registry. We found that the incidences of NTS- and Campylobacter-related illness among HIV-positive patients in Denmark have declined since the introduction of HAART, although the incidences remained higher compared to the background population. Moreover our study suggests that there is an increased incidence of Campylobacter-related illness among homosexual men in the HIV-positive population. [ABSTRACT FROM AUTHOR]

Presents letters to the editor for June 7, 2003. Comment on the statistical method, case selection, and clinical data in a study of mortality associated with foodborne bacterial gastrointestinal infections; Topic of the increased risk of suicides and cancer deaths in a study of mortality in Swedish women with cosmetic breast implants; Opinion that research by Alderson and Chalmers makes inappropriate claims; Concerns about a study on the routine telephone review of asthma and the issue of quality dimension measurement; Consumption of coffee during pregnancy; Doctors as servants of patients.

Introduction: Treatment of recurrent Clostridioides difficile infection with faecal microbiota transplantation (FMT) is highly effective and is the recommended treatment following a second recurrence. The cure rates of capsule treatment are high (82%-88%). Whether using multi-donor or single-donor FMT capsules affects cure rates remains incompletely understood., Methods: A retrospective case series of patients with recurrent, refractory or fulminant C. difficile infection treated for three days with single-donor FMT capsules from October to December 2020 was conducted. The aim of the study was to investigate the clinical efficacy (cure rate) of the treatment and to compare cure rates with previously reported cure rates of treatment with multi-donor FMT capsules produced at the same stool bank. Clinical cure was defined as absence of diarrhoea or diarrhoea with a C. difficile negative stool sample eight weeks after treatment., Results: Clinical cure was observed in 15 of the 18 (83.3%) patients following three days of FMT capsule treatment. Cure rates were comparable (p = 1.0) to previously reported cure rates (88.9%) of multi-donor FMT capsule treatment of recurrent C. difficile infection., Conclusions: Three days of single-donor FMT capsule treatment was effective and safe in the treatment of recurrent, refractory and fulminant C. difficile infection with cure rates comparable to those of multi-donor FMT capsule treatment., Funding: This work was supported by the Danish Innovation Fund under Grant 7076-00129B, MICROHEALTH. The funders had no role in the study design, data collection or analysis, the decision to publish, or in the preparation of the manuscript. The FMT capsules from the Aleris-Hamlet FMT Stool Bank were supplied to the Copenhagen University Hospital - Hvidovre Hospital free of charge., Trial Registration: not relevant., (Articles published in the DMJ are “open access”. This means that the articles are distributed under the terms of the Creative Commons Attribution Non-commercial License, which permits any non-commercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.)

A fast-track pathway has been established in Denmark to investigate patients with serious nonspecific symptoms and signs of cancer (NSSC), who are not eligible to enter an organ-specific cancer program. The prevalence of cancer in this cohort is approximately 20%. The optimal screening strategy in patients with NSSC remains unknown. The aim of the study was to investigate whether 18 F-FDG PET/CT was superior to CT as an initial imaging modality in patients with NSSC. In a randomized prospective trial, the imaging modalities were compared with regard to diagnostic performance. Methods: Two hundred patients were randomized 1:1 to whole-body 18 F-FDG PET/CT or CT of the thorax and abdomen as the imaging modality. A tentative diagnosis was established after first-line imaging. The final referral diagnosis was adjudicated by the physician, when sufficient data were available. Results: One hundred ninety-seven patients were available for analysis because 3 patients withdrew consent before scanning. Thirty-nine (20%) patients were diagnosed with cancer, 10 (5%) with an infection, 15 (8%) with an autoimmune disease, and 76 (39%) with other diseases. In the remaining 57 patients (28%), no specific disease was found. 18 F-FDG PET/CT had a higher specificity (96% vs. 85%; P = 0.028) and a higher accuracy (94% vs. 82%; P = 0.017) than CT. However, there were no statistically significant differences in sensitivity (83% vs. 70%) or negative predictive values (96% vs. 92%). No difference in days to final referral diagnosis according to randomization group could be shown (7.2 vs. 7.6 d). However, for the subgroups in which the imaging modality showed a suggestion of malignancy, there was a significant delay to final diagnosis in the CT group compared with the 18 F-FDG PET/CT group (11.6 vs. 5.7 d; P = 0.02). Conclusion: Compared with CT, we found a higher diagnostic specificity and accuracy of 18 F-FDG PET/CT for detecting cancer in patients with NSSC. 18 F-FDG PET/CT should therefore be considered as first-line imaging in this group of patients., (© 2017 by the Society of Nuclear Medicine and Molecular Imaging.)

In a matched cohort study we estimate the risk of hospitalisation due to gastroenteritis, complications and sequelae after infections with zoonotic Salmonella, Campylobacter spp., Yersinia enterocolitica, E. coli and Shigella infections. Out of 52,783 patients, 7,524 (14.4%) were hospitalized with gastroenteritis, 647 (1.2%) with complications and 865 (1.7%) with long-term sequelae. In Denmark in 2005 there were 6,010 registered episodes of infections with bacteria that are usually foodborne, contributing to an estimated 6,267 days of hospitalisation.

Objectives: To determine the excess mortality associated with infections with Salmonella, Campylobacter, Yersinia enterocolitica, and Shigella and to examine the effect of pre-existing illness., Design: Registry based, matched cohort study., Setting: Denmark., Participants: 48 857 people with gastrointestinal infections plus 487 138 controls from the general population., Main Outcome Measure: One year mortality among patients with gastrointestinal infections compared with controls after adjustment for comorbidity., Results: 1071 (2.2%) people with gastrointestinal infections died within one year after infection compared with 3636 (0.7%) controls. The relative mortality within one year was 3.1 times higher in patients than in controls. The relative mortality within 30 days of infection was high in all four bacterial groups. Furthermore, there was excess mortality one to six months after infection with Yersinia enterocolitica (relative risk 2.53, 95% confidence interval 1.38 to 4.62) and from six months to one year after infection with Campylobacter (1.35, 1.02 to 1.80) and Salmonella (1.53, 1.31 to 1.79)., Conclusions: Infections with all these bacteria were associated with an increased short term risk of death, even after pre-existing illnesses were taken into account. Salmonella, Campylobacter, and Yersinia enterocolitica infections were also associated with increased long term mortality.