Molecular epidemiology of the SARS-CoV-2 variant Omicron BA.2 sub-lineage in Denmark, 29 November 2021 to 2 January 2022.

Following emergence of the SARS-CoV-2 variant Omicron in November 2021, the dominant BA.1 sub-lineage was replaced by the BA.2 sub-lineage in Denmark.

Three cases of Sutterella wadsworthensis bacteremia secondary to abdominal infections.

The anaerobic bacterium Sutterella wadsworthensis has previously been isolated from the human intestine, both in healthy individuals and patients with gastrointestinal disorders, and the clinical significance of this bacterium is unknown. In this case report, we describe three cases of bacteremia with Sutterella wadsworthensis, from patients with recent intraabdominal surgery.

Persistent Severe Acute Respiratory Syndrome Coronavirus 2 Infection in Immunocompromised Host Displaying Treatment Induced Viral Evolution.

We report a coronavirus disease 2019 case with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) persisting beyond 333 days in an immunocompromised patient with chronic lymphocytic leukemia, asymptomatically carrying infectious SARS-CoV-2 at day 197 postdiagnosis. In addition, viral sequencing indicates major changes in the spike protein over time, temporally associated with convalescent plasma treatment.

Helicobacter cinaedi bacteraemia secondary to enterocolitis in an immunocompetent patient.

Background: Helicobacter cinaedi are motile, gram-negative spiral rods with a natural reservoir in the intestinal tract of hamsters and rhesus monkeys. In humans, H. cinaedi has been reported in different human infections like fever, abdominal pain, gastroenteritis, proctitis, diarrhoea, erysipelas, cellulitis, arthritis, and neonatal meningitis typically diagnosed by positive blood cultures.

Case report: A fatal case of aortic and mitral valve endocarditis caused by .

Background: Infective endocarditis (IE) secondary to rat-bite fever (RBF) is rare but potentially lethal. Rapid diagnosis is of utmost prognostic importance. However, the diagnosis of RBF is challenging because does not grow under conventional culture conditions.

First Danish case of infective endocarditis caused by .

, a member of the genus, is known to cause infections, including infective endocarditis (IE), in animal species. In humans, is an uncommon pathogen, but has been associated with severe and recurrent disease. Here, we report the first Danish case of native aortic valve IE in a 62-year-old woman with no history of heart disease.

Rare meningitis case in a Danish male.

Introduction: is a Gram-negative, aerobic, non-motile rod belonging to the family . Over the last 5 years, it has emerged as an opportunistic human pathogen involved in neonatal meningitis and sepsis, as well as nosocomial outbreaks. It has been isolated from the midgut of the mosquito, but there is no evidence for a role of the mosquito in human infections, and very little is known regarding the routes of transmission to humans.

The marine sulfate reducer Desulfobacterium autotrophicum HRM2 can switch between low and high apparent half-saturation constants for dissimilatory sulfate reduction.

Studies of the kinetics of dissimilatory sulfate reduction in marine sediment have shown that a mixture of marine sulfate-reducing bacteria (SRB) can reduce sulfate with both a high and low apparent sulfate half-saturation constant (Km). However, all marine pure cultures investigated have shown only low-sulfate affinity sulfate reduction kinetics. It remains unknown whether marine high sulfate-affinity sulfate reduction is catalyzed by unknown SRB or whether known SRB possess unrecognized high-affinity sulfate reduction systems.