Welke soorten Streptokokken zijn er?

Welke soorten Streptokokken zijn er?

Soorten

• Streptococcus agalactiae (Groep-B-streptokok)
• Streptococcus anginosus (Groep-F-streptokok)
• Streptococcus equisimilis (Groep-C-streptokok)
• Streptococcus gordonii.
• Streptococcus mitis.
• Streptococcus mutans.
• Streptococcus oralis.
• Streptococcus pneumoniae.

How is viridans streptococci differentiated from Streptococcus pneumoniae (S pneumoniae)?

Viridans streptococci can be differentiated from Streptococcus pneumoniae using an optochin test, as viridans streptococci are optochin-resistant; they also lack either the polysaccharide -based capsule typical of S pneumoniae or the Lancefield antigens of the pyogenic members of the genus.

How do you test for viridans Streptococcus pneumoniae?

Identification Viridans streptococci can be differentiated from Streptococcus pneumoniae using an optochin test, as viridans streptococci are optochin-resistant; they also lack either the polysaccharide -based capsule typical of S. pneumoniae or the Lancefield antigens of the pyogenic members of the genus.

What is the scientific name for viridans streptococci?

Viridans streptococci. Jump to navigation Jump to search. The viridans streptococci are a large group of commensal streptococcal Gram-positive bacteria species that are α-hemolytic, producing a green coloration on blood agar plates (hence the name “viridans”, from Latin “vĭrĭdis”, green).

What is the pseudotaxonomic term for Streptococcus?

The pseudo-taxonomic term “Streptococcus viridans” is often used to refer to this group of species, but writers who do not like to use the pseudotaxonomic term (which treats a group of species as if they were one species) prefer the terms viridans streptococci, viridans group streptococci (VGS), or viridans streptococcal species.

Waar leven streptokokken?

Streptokokken leven onder andere in onze darmen, de bovenste luchtwegen en op de huid. Maar ook in onze mond, zoals Streptococcus mutans. Een minder fijne soort. Deze bacterie produceert zuren bij de afbraak van suikers en zorgt daarmee voor gaatjes.

Welke vorm hebben Spirocheten?

Spirocheten hebben de vorm van een kurkentrekker, waarmee ze zich in een weefsel kunnen boren.

What is alpha hemolytic streptococcus viridans streptococci?

Alpha Hemolytic Streptococcus Viridans streptococci are a heterogeneous group of α-hemolytic and nonhemolytic streptococci that are constituents of the normal flora of the respiratory and gastrointestinal tracts of infants, children, and adults. From: Infectious Diseases of the Fetus and Newborn (Seventh Edition), 2011

What are the characteristics of viridans streptococci?

Viridans streptococci. Viridans streptococci are a heterogeneous group of α-hemolytic and nonhemolytic streptococci that are constituents of the normal flora of the respiratory and gastrointestinal tracts of infants, children, and adults.

What are the causes of Streptococcus viridans?

Causes Of Streptococcus Viridans. We have mentioned earlier that the streptococcus Viridans are often present in the mouth, genital regions, and the gut. The most serious infection of streptococcus Viridans occur when the microbe or the bacteria enters any other regions of your body.