Francisella tularensis subsp. holarctica is a select agent causing life-threatening tularemia. It has been isolated from humans and animals, mainly lagomorphs and rodents, rarely other wild carnivore species. Increasing numbers of human tularemia cases have been reported during the last 5 years in Switzerland. Here we report the first isolation of Francisella tularensis subsp. holarctica from a domestic cat in Europe and compare its genome sequence with other Swiss isolates. The cat isolate shows a close phylogenetic relationship with a contemporary hare isolate from close geographic proximity, indicating a possible epidemiological link.
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http://dx.doi.org/10.1186/s13567-020-00834-5 | DOI Listing |
IDCases
December 2024
Division of Public Health, Infectious Disease, and Occupational Medicine, Mayo Clinic, Rochester, MN, USA.
is a facultatively intracellular, gram-negative bacillus and a rare cause of infection in the United States. We report a case of a 45-year-old male who presented with ongoing fever, shortness of breath, and was found to have a pericardial effusion and pulmonic infiltrates due to . Though tularemia is classically associated with rabbits and rodents, we note the patient in our case had no clear infectious exposure.
View Article and Find Full Text PDFJ Bacteriol
January 2025
Department of Pathology, Microbiology, and Immunology, University of Nebraska Medical Center, Omaha, Nebraska, USA.
Unlabelled: is one of the most virulent bacterial pathogens known and causes the disease tularemia, which can be fatal if untreated. This zoonotic and intracellular pathogen is exposed to diverse environmental and host stress factors that require an appropriate response to survive. However, the stress tolerance mechanisms used by to persist are not fully understood.
View Article and Find Full Text PDFS D Med
December 2024
Department of Internal Medicine, University of South Dakota Sanford School of Medicine.
Background: Francisella tularensis is an aerobic, gram negative coccobacillus bacterium that causes tularemia. F. tularensis spreads primarily through ticks, biting flies, droplet inhalation, contaminated mud or water, or infected animal bites, and it can survive in animal carcasses with the most common mode of transmission occurring via inoculation into the skin and inhalation/ingestion.
View Article and Find Full Text PDFBMC Microbiol
January 2025
Cellular Interactions of Bacterial Pathogens, Centre for Biological Threats and Special Pathogens, Highly Pathogenic Microorganisms (ZBS 2), Robert Koch Institute, Seestraße 10, 13353, Berlin, Germany.
Background: The zoonotic and highly infectious pathogen Francisella tularensis is the etiological agent of tularemia. Tularemia in humans is mainly caused by F. tularensis subspecies tularensis and holarctica, but Francisella species like F.
View Article and Find Full Text PDFVaccine
January 2025
Department of Immunology and Microbial Disease, Albany Medical College, 47 New Scotland Ave, Albany, NY 12208, United States.
The development of safe and effective mucosal vaccines are hampered by safety concerns associated with adjuvants or live attenuated microbes. We previously demonstrated that targeting antigens to the human-Fc-gamma-receptor-I (hFcγRI) eliminates the need for adjuvants, thereby mitigating safety concerns associated with the mucosal delivery of adjuvant formulated vaccines. Here we evaluated the role of the route of immunization in the mucosal immunity elicited by the hFcγRI-targeted vaccine approach.
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