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- Streptococcal infections are caused by any one of several species of Streptococcus. These gram-positive, sphere-shaped (coccal) bacteria (see figure) cause many disorders, including strep throat, pneumonia, and wound, skin, heart valve, and bloodstream infections.
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Streptococcus is a genus of gram-positive (pl.: cocci) or spherical bacteria that belongs to the family Streptococcaceae, within the order Lactobacillales (lactic acid bacteria), in the phylum Bacillota. [2]
- Streptococcus Dysgalactiae
Streptococcus dysgalactiae is a gram positive,...
- Streptococcus Mutans
Streptococcus mutans is a facultatively anaerobic,...
- Viridans Streptococci
The viridans streptococci are a large group of commensal...
- Streptococcus Pyogenes
The most frequent manifestations of disease are commonly...
- Salivary Microbiome
The salivary microbiome consists of the nonpathogenic,...
- Strep Throat
Streptococcal pharyngitis, also known as streptococcal sore...
- Streptococcus Dysgalactiae
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Aug 30, 2024 · Streptococci are microbiologically characterized as gram-positive and nonmotile. Streptococcus contains a variety of species, some of which cause disease in humans and animals, while others are important in the manufacture of certain fermented products.
- The Editors of Encyclopaedia Britannica
Streptococcaceae are a family of Gram-positive bacteria, placed within the order Lactobacillales. [1] Representative genera include Lactococcus, Lactovum, and Streptococcus.
Jan 25, 2024 · Streptococci are gram-positive bacteria that make up normal microbial flora of humans and animals. 1 In humans, they commonly inhabit the upper respiratory tract, urogenital tract, gastrointestinal tract, and oral cavity. 2 Streptococci are classified into α, β, and γ based on their hemolytic properties in blood agar medium. 1 These bacteria are...
Claire E. Turner, in Infectious Diseases (Fourth Edition), 2017. Introduction. The genus Streptococcus currently comprises 99 recognized species, many of which are associated with disease in humans and animals (www.bacterio.net/streptococcus.html).
The most frequent manifestations of disease are commonly known as scarlet fever. Infections typically begin in the throat or skin. The most striking sign is a strawberry-like rash. Examples of mild S. pyogenes infections include pharyngitis (strep throat) and localized skin infection (impetigo).
Streptococci are gram-positive aerobic organisms that cause many disorders, including pharyngitis, pneumonia, wound and skin infections, sepsis, and endocarditis. Symptoms vary with the organ infected. Sequelae of infections due to group A beta-hemolytic streptococci may include rheumatic fever and glomerulonephritis.
