Streptococcus pneumoniae


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Streptococcus

 [strep″to-kok´us]
a genus of gram-positive, facultatively aerobic cocci (family Streptococcaceae) occurring in pairs or chains. It is separable into the pyogenic group, the viridans group, the enterococcus group, and the lactic group. The first group includes the beta-hemolytic human and animal pathogens; the second and third include alpha-hemolytic parasitic forms occurring as normal flora in the upper respiratory tract and the intestinal tract, respectively; and the fourth is made up of saprophytic forms.
Streptococcus mu´tans a species implicated in dental caries.
Streptococcus pneumo´niae a small, slightly elongated, encapsulated coccus, one end of which is pointed or lance-shaped; the organisms commonly occur in pairs. This is the most common cause of lobar pneumonia, and it also causes serious forms of meningitis, septicemia, empyema, and peritonitis. There are some 80 serotypes distinguished by the polysaccharide hapten of the capsular substance. Called also pneumococcus.
Streptococcus pyo´genes a beta-hemolytic, toxigenic, pyogenic species that causes septic sore throat, scarlet fever, rheumatic fever, puerperal fever, acute glomerulonephritis, and other conditions in humans.

Strep·to·coc·cus pneu·mo·ni·ae

a species of gram-positive, lancet-shaped cocci and diplococci frequently occurring in chains; cells are readily lysed by bile salts. Virulent forms are enclosed in type-specific polysaccharide capsules, the basis for an effective vaccine. Normal inhabitants of the respiratory tract, and the most common cause of lobar pneumonia, they are the most common causative agents of meningitis, and pneumonia worldwide, and also cause otitis media, sinusitis, and other infections. It is the type species of the former genus Diplococcus.

Streptococcus pneumoniae

Microbiology A pathogenic streptococcus with 90 serotypes associated with pneumonia, bacteremia, meningitis Transmission Person to person Incidence Before 2000, S pneumoniae infections caused 100K-135K hospitalizations for pneumonia, 6 million cases of otitis media, and 60K cases of invasive disease–including 3300 cases of meningitis; sterile-site infections have a geographic variation of 21-33/105 Risk groups Elderly, children < age 2, African Americans, Native Americans, day care center inmates, and persons with underlying medical conditions including HIV infection and sickle-cell disease Prophylaxis 88% of clinical isolates of S pneumoniae are serotypes in the 23-valent polysaccharide vaccine. See Meningitis.

Strep·to·coc·cus pneu·mo·ni·ae

(strep'tō-kok'ŭs nū-mō'nē-ē)
A bacterial species of gram-positive, lancet-shaped diplococci frequently occurring in pairs or chains. Virulent forms are enclosed in type-specific polysaccharide capsules. Normal inhabitants of the respiratory tract, and the cause of lobar pneumonia, otitis media, meningitis, sinusitis, and other infections.
Synonym(s): pneumococcus.

Strep·to·coc·cus pneu·mo·ni·ae

(strep'tō-kok'ŭs nū-mō'nē-ē)
A bacterial species of gram-positive, lancet-shaped diplococci frequently occurring in pairs or chains. Normal inhabitants of the respiratory tract, and the cause of lobar pneumonia, otitis media, meningitis, sinusitis, and other infections.
Synonym(s): pneumococcus.

Patient discussion about Streptococcus pneumoniae

Q. What Is Streptococcal Pneumonia? I have heard that I might have streptococcal pneumonia. What exactly does that mean?

A. Streptococcal pneumonia is a disease caused by the streptoccus bacteria. It is one of the most common causes of pneumonia in healthy people. You can learn more about bacterial pneumonia here-
http://www.5min.com/Video/Pneumonia---Viral-or-Bacterial--9552

More discussions about Streptococcus pneumoniae
References in periodicals archive ?
Streptococcus pneumoniae skin and soft tissue infections: characterization of causative strains and clinical illness.
Invasive serotype 1 Streptococcus pneumoniae outbreaks in the South Pacific from 2000 to 2007.
The rats were narcotized at different time after being infected with Streptococcus pneumoniae. Rat skulls were fixed in the orbits using the hooked forceps, and brain tissues were collected after cutting the junctions between the skulls and cervical vertebrae using the tissue scissors.
Distribution of serotypes and antimicrobial resistance of Streptococcus pneumoniae strains isolated in Brazil from 1988 to 1992.
P James, Comparative Virulence of Streptococcus pneumoniae Strains with Insertion-Duplication, Point, and Deletion Mutations in the Pneumolysin Gene, Infect.
Serotype distribution and antimicrobial resistance of Streptococcus pneumoniae in children with acute bacterial meningitis in Mozambique: implications for a national immunization strategy.
Streptococcus pneumoniae: new tools for an old pathogen.
Streptococcus pneumoniae serotypes involved in children with pleural empyemas in France.
Aim of the present study was to perform epidemiological and clinical study of Streptococcus pneumoniae between different age groups from Hyderabad region.
[5.] Kadiouglu A, Weiser JN, Paton JC, Andrew PW (2008) The role of Streptococcus pneumoniae virulence factors in host respiratory colonization and disease.

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