Publications by authors named "Daniela Jacob"

Article Synopsis
  • The study aimed to establish standardized methods for antimicrobial susceptibility testing of Bacillus anthracis across Europe, addressing the absence of clinical breakpoints from EUCAST.
  • About 335 B. anthracis isolates were tested using two methodologies, revealing wild-type distributions and defined epidemiological cut-off values (ECOFFs) for ten key antimicrobials.
  • Results showed resistance in some strains, with implications for monitoring resistance development and the need for further genetic investigations on isolates exhibiting slightly increased minimum inhibitory concentrations (MICs).
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Global warming has caused an increase in the emergence of species in marine and estuarine environments as well as fresh water bodies. Over the past decades, antimicrobial resistance (AMR) has evolved among species toward various antibiotics commonly used for the treatment of infections. In this study, we assessed virulence and resistance patterns of non-O1/non-O139 strains derived from Germany and other European countries.

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Background: The diagnosis of tularemia is not often considered in Germany as the disease is still rare in this country. Nonetheless, Francisella tularensis, the causative agent of tularemia, can infect numerous animal species and should, therefore, not be neglected as a dangerous pathogen. Tularemia can lead to massively swollen lymph nodes and might even be fatal without antibiotic treatment.

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Brucellosis, mainly caused by (B.) , is associated with a risk of chronification and relapses. Antimicrobial susceptibility testing (AST) standards for are not available, and the agent is not yet listed in the EUCAST breakpoint tables.

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Article Synopsis
  • * A new Multi Locus Sequence Typing Assay (cgMLST) was developed, targeting 3,328 genes, allowing for detailed strain-level analysis and validation with 120 existing genomes and 23 new outbreak strains.
  • * The assay effectively distinguishes strains from different regions by at least 70 genetic differences, proving robust and reliable for tracking outbreaks and characterizing new strains without being affected by various sequencing methods.
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In November 2018, a tularaemia outbreak occurred in Bavaria, Germany, among participants of a hare hunt and butchery employees handling the hares. We conducted an epidemiological outbreak investigation, including a retrospective cohort study among hunting participants, to identify likely transmission routes and activities associated with infection. Twelve of 41 participants were antibody-positive for Francisella (F.

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Background spp. are aquatic bacteria that prefer warm seawater with moderate salinity. In humans, they can cause gastroenteritis, wound infections, and ear infections.

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Here, we report the complete genome sequence of subsp. strain A271_1, isolated from a Eurasian beaver () in 2012 in the Berlin/Brandenburg region, Germany.

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In November 2018, an outbreak of tularemia occurred among hare hunters in Bavaria, Germany. At least one infected hare was confirmed as the source of infection. A number of hunting dogs showed elevated antibody titers to , but the absence of titer increases in subsequent samples did not point to acute infections in dogs.

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Tularemia is a zoonotic disease caused by a small, pleomorphic, facultative intracellular bacterium. In Europe, infections in animals and humans are caused mainly by subspecies . Humans can be exposed to the pathogen directly and indirectly through contact with sick animals, carcasses, mosquitoes and ticks, environmental sources such as contaminated water or soil, and food.

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Europe-wide activities to improve biosafety and biosecurity performed within the frameworks of the European Union (EU)-funded Joint Actions EMERGE and QUANDHIP led to the development of an Integrated European Checklist for Laboratory Biorisk Management (ECL).To better understand different approaches shaping biorisk management (BRM) systems on an operational level in high containment laboratories, the ECL was used to map the implementation of BRM in 32 high containment laboratories in 18 countries in Europe. The results suggest that the BRM elements referring to standard microbiological working practices and the handling of infectious material were fulfilled particularly well.

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and are highly pathogenic species which are closely related, but diverse regarding their prophage content. While temperate phages have not yet been isolated from , several phages of , and its non-pathogenic relative have been described. In this study we isolated two phages from and three phages from and determined their morphology, host range, and relationship.

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is an intracellular pleomorphic bacterium and the causative agent of tularemia, a zoonotic disease with a wide host range. Among the subspecies, especially subsp. is of clinical relevance for European countries.

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Background: Tularemia is caused by Francisella tularensis and can occasionally establish foodborne transmission.

Methods: Patients were identified by active case detection through contact with the treating physicians and consent for publication was obtained. Clinical data were accumulated through a review of the patient charts.

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BackgroundIn 2016, an uncommon outbreak of oropharyngeal tularaemia involving six human cases occurred in Germany, caused by drinking contaminated fresh must after a grape harvest.AimWe describe the details of laboratory investigations leading to identification of the outbreak strain, its characterisation by next generation sequencing (NGS) and the finding of the possible source of contamination.MethodsWe incubated wine samples in different media and on agar plates.

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A Bacillus anthracis vaccine strain (Sterne), used as an attenuated laboratory comparative strain, was sequenced and analyzed. A comparison to assemblies of B. anthracis strain Sterne (NZ_CP009541 and NZ_CP009540) was performed.

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Whole genome sequencing (WGS) methods provide new possibilities in the field of molecular epidemiology. This is particularly true for monomorphic organisms where the discriminatory power of traditional methods (e.g.

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Tularemia, also known as "rabbit fever," is a zoonosis caused by the facultative intracellular, gram-negative bacterium . Infection occurs through contact with infected animals (often hares), arthropod vectors (such as ticks or deer flies), inhalation of contaminated dust or through contaminated food and water. In this review, we would like to provide an overview of the current epidemiological situation in Germany using published studies and case reports, an analysis of recent surveillance data and our own experience from the laboratory diagnostics, and investigation of cases.

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Highly infectious diseases can spread rapidly across borders through travel or trade, and international coordination is essential to a prompt and efficient response by public health laboratories. Therefore, developing strategies to identify priorities for a rational allocation of resources for research and surveillance has been the focus of a large body of research in recent years. This paper describes the activities and the strategy used by a European-wide consortium funded by the European Commission, named EMERGE (Efficient response to highly dangerous and emerging pathogens at EU level), for the selection of high-threat pathogens with cross-border potential that will become the focus of its preparedness activities.

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A teenage woman migrating from Syria arrived in May 2015 in Germany. She gave birth to a healthy child in early 2016, but became febrile shortly after delivery. Blood cultures revealed Brucella melitensis.

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We examined clinical samples from Nigerian patients with acute watery diarrhea for Vibrio cholerae during the 2010 cholera outbreak. A total of 109 suspected isolates were characterized, but only 57 V. cholerae strains could be confirmed using multiplex real-time PCR as well as rpoB sequencing and typed as V.

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A German businessman developed acute watery diarrhoea after a three-day trip to the Philippines. He was admitted with severe hypotension and acute renal failure, but recovered with rapid rehydration. Vibrio cholerae O1 serotype Ogawa was isolated.

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Pavlovich's medium T was compared with other broadly used media and extensively checked by growth of various subspecies of Francisellatularensis as well as other risk group 3 bacteria. The medium was successfully re-evaluated as an optimal liquid medium suitable for enrichment of fastidious and/or highly pathogenic bacteria.

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