Mycoplasma bovis has emerged as an important pathogen of young intensively reared calves in North America. A variety of clinical diseases are associated with M bovis infections of calves, including respiratory disease, otitis media, arthritis, and some less common presentations. Clinical disease associated with M bovis often is chronic, debilitating, and poorly responsive to antimicrobial therapy. Current control measures are centered on reducing exposure to M bovis through contaminated milk or other sources, and nonspecific control measures to maximize respiratory defenses of the calf. This article focuses on the clinical and epidemiologic aspects of M bovis infections in young calves.
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Tuberculosis (Edinb)
January 2025
Infectious Bacterial Diseases Research Unit, National Animal Disease Center, Agricultural Research Service, United States Department of Agriculture, Ames, Iowa, USA.
Bovine tuberculosis is mainly caused by Mycobacterium bovis. Bacillus Calmette-Guérin (BCG) is an attenuated strain of M. bovis which provides variable disease protection.
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January 2025
The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian EH25 9RG, UK.
The domestic dog () is a competent host for () infection but no ante mortem diagnostic tests have been fully validated for this species. The aim of this study was to compare the performance of ante mortem diagnostic tests across samples collected from dogs considered to be at a high or low risk of sub-clinical infection. We previously tested a total of 164 dogs at a high risk of infection and here test 42 dogs at a low risk of infection and 77 presumed uninfected dogs with a combination of cell-based and/or serological diagnostic assays previously described for use in non-canid species.
View Article and Find Full Text PDFPathogens
December 2024
Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian EH25 9RG, UK.
Mycobacterial infections are an important emerging zoonosis in companion animals for which diagnostic options remain imperfect, and the canine immunological response to these infections has been poorly investigated. We sought to further define the cellular response of peripheral blood mononuclear cells (PBMCs) from dogs infected with , as determined using a commercial interferon-gamma response assay (IGRA). To this end, PBMCs from healthy or infected dogs were collected.
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December 2024
Department of Parasitology, Faculty of Science, Charles University, 128 00 Prague, Czech Republic.
Bartonellae are zoonotic pathogens with a broad range of reservoir hosts and vectors. To examine sylvatic reservoirs, tissue samples of red deer (, = 114) and their associated deer keds (, = 50; , = 272) collected in the Czech Republic were tested for the presence of using PCR at four loci (, , , ITS); PCR sensitivity was increased significantly by using primers modified for the detection of wildlife-associated bartonellae. One-third of the deer and 70% of the deer keds were positive; within the tested animal tissues, usually the spleen was positive.
View Article and Find Full Text PDFInt J Mol Sci
January 2025
College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China.
() has caused huge economic losses to the cattle industry. The interaction between and host cells is elucidated by screening and identifying the target protein of adhesin on the surface of the host cell membrane. However, the response mechanism of embryonic bovine lung (EBL) cells to infection is not yet fully understood.
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