Leptospira is a flexible, spiral-shaped, Gram-negative spirochete with internal flagella. Leptospira interrogans has many serovars based on cell surface antigens.

Infectious Diseases Leptospira are tightly coiled, aerobic, Gram-negative, flagellated spirochetes belonging to the genera Leptospira, family Leptospiraceae, phylum, Spirochaetes (Boone et al., 2001). Before 1989, the genus, Leptospira, was divided into two species, L. interrogans (pathogenic) and L.

Leptospirosis is a bacterial disease that affects humans and animals. It is caused by bacteria of the genus Leptospira. In humans, it can cause a wide range of symptoms, some of which may be mistaken for other diseases. Some infected persons, however, may have no symptoms at all.

Leptospira are classified into 20 species and genomospecies, of which 9 (L. interrogans, L. kirschneri, L. noguchii, L.

Epidemic or louse-borne relapsing fever is caused by Borrelia recurrentis. It is transmitted by the human body louse. Leptospirosis is a zoonosis of global distribution caused by infection with pathogenic spirochetes of the genus Leptospira. It is greatly underreported, particularly in tropical regions.

Rats are common sources for human infections because they are the maintenance hosts for the serovars that cause disease in people. Wild animals that are potential reservoirs include raccoons, skunks, squirrels, insectivores (moles, shrews, hedgehogs), opossums, deer, rodents, buffalo, and marsupials.

Borrelia burgdorferi is a spiral-shaped (spirochete) bacterium that is endemic in North America and Europe. It is neither gram negative nor gram positive, and it is most commonly known as the causative agent of Lyme disease.

Spirochaetes
Leptospira/Class
Infectious Diseases Leptospira are tightly coiled, aerobic, Gram-negative, flagellated spirochetes belonging to the genera Leptospira, family Leptospiraceae, phylum, Spirochaetes (Boone et al., 2001). Before 1989, the genus, Leptospira, was divided into two species, L. interrogans (pathogenic) and L.

Treponema cells are gram-negative, but most of the strains do not take up stain easily by Gram staining or Giemsa staining.

Leptospira is also a motile bacteria because it has flagella that help it move around. Finally, it doesn’t form spores and it’s aerobic, meaning it needs oxygen to grow.

Structure, Classification, and Antigenic Types. Leptospira is a flexible, spiral-shaped, Gram-negative spirochete with internal flagella. Leptospira interrogans has many serovars based on cell surface antigens. Pathogenesis Leptospira enters the host through mucosa and broken skin, resulting in bacteremia.

Bacteria; Spirochaetes; Spirochaetes; Spirochaetales; Leptospiraceae; Leptospira Leptospira interrogans is a gram negative obligate aerobe. This bacterium is motile and has a spiral or helical shape like other spirochetes (1). It has an optimum temperature of 30 degrees Celsius and an optimum pH of 7.4.

Leptospira are Gram-negative spirochetes with at least 20 different species in the genus. Of these, at least 9 species are considered pathogenic, including the most common agent of leptospirosis, Leptospira interrogans.

The Leptospira genus has over 20 species, and the most common species that causes leptospirosis in humans is Leptospira interrogans. Now, Leptospira is a tiny spiral bacteria, that stains poorly with Gram staining, because it doesn’t retain the Gram dyes well, so it’s classically considered gram-negative.