Streptococcus pneumoniae is a gram-positive, catalase-negative cocci that has remained an extremely important human bacterial pathogen since its initial recognition in the late 1800s. The term pneumococcus gained widespread use by the late 1880s, when it was recognized as the most common cause of bacterial lobar pneumonia.

2021-04-02 · Pneumococcal meningitis is caused by Streptococcus pneumoniae bacteria (also called pneumococcus, or S pneumoniae). This type of bacteria is the most common cause of bacterial meningitis in adults. It is the second most common cause of meningitis in children older than age 2.

Microscopy and Staining Perform Gram staining of the sample (sputum/CSF) Gram staining shows Gram positive lanceolate shaped diplococci; 2. Culture and Sensitivity Immunologic detection of pneumococcal capsular material (“bacterial antigen”) generally does not add information beyond what is determined by Gram stain, although nuclear probes may eventually be useful in this situation. Other infections. As noted above, S. pneumoniae can be implicated in a wide variety of infectious states. Most colonies of S. pneumoniae will dissolve within a few minutes when a drop of bile is placed upon them.

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特にお年寄りで発生率が高く，米国のレビューでは髄膜炎の60％が本菌であり，そのうち70％は高齢者ということになっていた．. [1] 有名な話であるが Streptococcus pneumoniae〔肺炎球菌〕. 喀痰. 染色像. グラム陽性球菌（Gram Positive Coccus）. グラム陽性双球菌: Gram Positive Diplo-Coccus. 染色の特徴.

Staphylococcus: Streptococcus: 1: Arrangement: Grape-like clusters. A chain of round cells. 2: Division: Staphylococci divide in various directions (multiple axes). Division occurs in one linear direction (single axis). 3: Catalase Test: Positive (Catalase is an enzyme to converts hydrogen peroxide to water and oxygen gas). Negative: 4: Enriched Media

Streptococcus pneumoniae are lancet-shaped, gram-positive, facultative anaerobic bacteria with 100 known serotypes. Most S. pneumoniae serotypes can cause disease, but only a minority of serotypes produce the majority of pneumococcal infections. 2021-02-04 · Laboratory diagnosis, Treatment and Prevention of Streptococcus pneumoniae.

2014-11-10

Rebecca Lansefield: Cannot be classified Primary virulence factor of Streptococcus pneumoniae Composed of peptidoglycan and teichoic acid--transparent: dominates in the nasopharynx and expresses less capsule--Opaque: Types Gram-positive. 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. 2015-10-17 2017-06-23 Introduction.

The term pneumococcus gained widespread use by the late 1880s, when it was recognized as the most common cause of bacterial lobar pneumonia. Streptococcus pneumoniae, or pneumococcus, is a Gram-positive, alpha-hemolytic (under aerobic conditions) or beta-hemolytic (under anaerobic conditions), facultative anaerobic member of the genus Streptococcus. They are usually found in pairs (diplococci) and do not form spores and are nonmotile. As 2020-06-08 2013-01-22 Klebsiella pneumoniae Capsules Bacteria (Gram Negative Bacillus) In a previous post I discussed the Quellung Reaction which is used to visualize capsules produced by the gram positive organism Streptococcus pneumoniae (pneumococcus), There I mentioned that organisms other than the pneumococcus are capable of producing a capsule that surrounds the bacterial cell.
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· Klebsiella pneumoniae. · Proteus mirabilis. · Pseudomonas aeruginosa. Grampositive species. · Streptococcus anginosus.

2013-07-29 Streptococcus pneumoniae.
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Abiotrophia species​ are nutritionally variant streptococci (Gram-positive) that Infections that are caused by this organism include UTI, pneumonia, wound, 

Streptococcus pneumoniae played a central role in demonstrating that genetic material consists of DNA. Streptococcus pneumoniae are lancet-shaped, gram-positive, facultative anaerobic bacteria with 100 known serotypes. Most S. pneumoniae serotypes can cause disease, but only a minority of serotypes produce the majority of pneumococcal infections. Pneumococci are common inhabitants of the respiratory tract.