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Gram positive bacteria are an increasingly important cause of bacteremia. [13] Staphylococcus, streptococcus, and enterococcus species are the most important and most common species of gram-positive bacteria that can enter the bloodstream. These bacteria are normally found on the skin or in the gastrointestinal tract. [citation needed]
Arcanobacterium haemolyticum is a species of bacteria classified as a gram-positive bacillus. It is catalase -negative, facultative anaerobic , beta-hemolytic , and not motile . [ 1 ] It has been known to cause head and neck infections, pharyngitis , and sinusitis ( Arcanobacterium haemolyticum infections ).
Streptococcus pneumoniae is the most common bacterial cause of pneumonia in all age groups except newborn infants. Streptococcus pneumoniae is a Gram-positive bacterium that often lives in the throat of people who do not have pneumonia. Other important Gram-positive causes of pneumonia are Staphylococcus aureus and Bacillus anthracis.
GBS infections in adults include urinary tract infection, skin and soft-tissue infection (skin and skin structure infection) bacteremia, osteomyelitis, meningitis and endocarditis. [6] GBS infection in adults can be serious and related with high mortality. In general penicillin is the antibiotic of choice for treatment of GBS infection.
The treatment of choice is penicillin, and the duration of treatment is around 10 days. [23] Antibiotic therapy (using injected penicillin) has been shown to reduce the risk of acute rheumatic fever. [24] In individuals with a penicillin allergy, erythromycin, other macrolides, and cephalosporins have been shown to be effective treatments. [25]
[103] [127] GBS infections in adults include urinary tract infection, skin and soft-tissue infection (skin and skin structure infection) bacteremia without focus, osteomyelitis, meningitis and endocarditis. [3] GBS infection in adults can be serious, and mortality is higher among adults than among neonates. [103]
[33] [34] Sepsis caused by gram-positive bacteria may result from an immunological response to cell wall lipoteichoic acid. [35] Bacterial exotoxins that act as superantigens also may cause sepsis. [30] Superantigens simultaneously bind major histocompatibility complex and T-cell receptors in the absence of antigen presentation.
Streptococcus dysgalactiae is a gram positive, beta-haemolytic, coccal bacterium belonging to the family Streptococcaceae.It is capable of infecting both humans and animals, but is most frequently encountered as a commensal of the alimentary tract, genital tract, or less commonly, as a part of the skin flora.