The genetic relationships of Bacillus cereus and of the Bacillus thuringiensis serovars were assessed from measurements of DNA reassociation. A study of 8 to 10 strains each of 13 of the most commonly encountered serovars revealed that the levels of intragroup DNA relatedness for most serovars ranged from 90 to 100%. In contrast, B. thuringiensis serovars canadensis and kenyae consisted of two ...

Salmonella bacteria causes a wide variety of disease and disease syndrome in different animals, birds including human beings and remains as a serious problem with public health significance throughout the world. A suitable vaccine or suitable immunogen detection system is not yet still available. However, it is interesting to characterize of a common immunodominant surface protein from a wide v...

CE Email comments/questions to [email protected], fax 800-556-3288, or log on to www.VetLearn.com Leptospirosis is a zoonotic disease of worldwide significance. It is caused by antigenically distinct serovars of the parasitic species Leptospira interrogans sensu lato, of which eight are most important to dogs and cats. The disease, which is caused by serovars most commonly incriminated (...

Previous independent investigations of the serotyping of Haemophilus parasuis strains have led to the designation of serovars A to D, 1 to 7, Jena 6 to Jena 12, and ND1 to ND5. Heat-stable antigen preparations from the reference strains for these serovars were tested by immunodiffusion with rabbit hyperimmune antisera. The existence of 15 distinct serologic groups was apparent, for which we pro...

PURPOSE Ureaplasma colonization is related with perinatal complications in preterm infants. Little is known about the difference in virulence among various Ureaplasma urealyticum serovars. The aim of this study was to determine U. urealyticum serovars of preterm infants in order to assess whether any of the serovars were associated with bronchopulmonary dysplasia (BPD). METHODS Three hundred ...

ABSTRACT: Leptospirosis is a zoonosis that can infect buffaloes and other mammalians, it’s caused by Gram-negative bacteria of the genus Leptospira spp. The infection occurs through contact with urine or contaminated environment mucous membranes animals, disease has two phases: leptospiremia leptospiruria. objective this study was to determine frequency leptospirosis in state Paraná, Brazil, as...

Due to health concerns associated with the increase of antimicrobial resistance in foodborne pathogens such as Salmonella, plant extracts have become important natural alternatives known antimicrobials. The eradication effect water-soluble stinging nettle 2 mg/mL, 4 6 8 12 16 and 20 mg/mL concentrations, on pre-formed biofilms swimming motility Salmonella enterica subspecies serovars, including...

Most Salmonella serovars are general pathogens that infect a variety of hosts. These "generalist" serovars cause disease in many animals from reptiles to mammals. In contrast, a few serovars cause disease only in a specific host. Host-specific serovars can cause a systemic, often fatal disease in one species yet remain avirulent in other species. Host-specific Salmonella frequently have large g...

BACKGROUND The pathogenesis of Haemophilus parasuis depends on the bacterium's ability to interact with endothelial cells and invade adjacent tissues. In this study, we investigated the abilities of eight H. parasuis reference strains belonging to serovars 1, 2, 4, 5, 7, 9, 10 and 13 to adhere to and invade porcine aortic endothelial cells (AOC-45 cell line). RESULTS The strains belonging to ...

Fingerprints for 72 reference serovar strains of pathogenic Leptospira spp. were obtained by pulsed-field gel electrophoresis (PFGE) following NotI restriction digests of the chromosome. These strains included the serovar reference strains of serogroups Australis, Ballum, Bataviae, Grippotyphosa, Panama, Pomona, and Pyrogenes. Sixty-four serovars could be identified by a unique NotI restriction...