Serum from normal mammals agglutinated and immobilized nonpathogenic Leptospira biflexa and agglutinated avirulent lines of pathogenic serotypes L. icterohaemorrhagiae and L. zanoni. Virulent lines of L. icterohaemorrhagiae and L. zanoni were not affected, nor were any of three strains of L. pomona, one of which was avirulent. The active principle in serum was a beta-macroglobulin which was hea...

Six leptospiral strains isolated from bovine kidneys and one other strain isolated from midstream urine of a butcher were characterised. All the bovine isolates shared serological and biological properties characteristic of Leptospira interrogans but the human isolate had some characteristics of pathogenic and some of saprophytic leptospires. Although the human isolate was not recovered in cult...

INTRODUCTION: This study aimed to develop a duplex endpoint PCR assay for rapid detection and differentiation of Leptospira strains. METHODS: Primers were designed to target the rrs (LG1/LG2) and ligB (LP1/LP2) genes to confirm the presence of the Leptospira genus and the pathogenic species, respectively. RESULTS: The assay showed 100% specificity against 17 Leptospira strains with a limit ...

Leptospirosis is recognised as one of the commonest zoonotic infections in the world. In India, where animals provide the draught power for agriculture, which is the main profession of the population, the incidence of leptospirosis among animals and humans is high. In this paper, the isolation of pathogenic leptospires from human and animal hosts from several parts of India is reported. Because...

Leptospirosis is one of the common re-emerging zoonotic diseases transmitted from infected animals to humans. It is a bacterial infection caused by a species of pathogenic leptospiragenus called Spirochaetes. The very first case of human leptospirosis in Malaysia was discovered by Fletcher in the year 1925. Pathogenic leptospires can spread through the urine of carrier animals to the environmen...

Leptospirosis is a global zoonosis caused by pathogenic bacteria of the genus Leptospira. The application CRISPR/Cas9 system has facilitated generation mutants and subsequent evaluation phenotypes. Since DNA breaks induced RNA-guided Cas9 nuclease are lethal to Leptospira, different methodologies were implemented overcome this limitation. Initially, CRISPR interference (CRISPRi) was employed cr...

Leptospirosis is a growing public and veterinary health concern caused by pathogenic species of Leptospira. Rapid and reliable laboratory tests for the direct detection of leptospiral infections in animals are in high demand not only to improve diagnosis but also for understanding the epidemiology of the disease. In this work we describe a novel and simple TaqMan-based multi-gene targeted real-...

AIM To assess the ability of commercial blood culture systems to maintain leptospires. METHODS Nine different commercial blood culture bottles were compared for their ability to maintain four leptospiral strains at two temperatures, 30 degrees C and 37 degrees C. Bottles were subcultured at 48 hours, and one, two, three, and four week intervals and examined microscopically for the presence of...