STREPTOCOCCUS PYOGENES

Streptococcus Pyogenes

Streptococcus Pyogenes

Differential Diagnosis

Staphylococcus aureus refers to a group of bacteria that can cause a number of diseases leading to an infection of various tissues of the body.

Streptococcus pyogenes is a bacteria Gram-positive that grows in long chains. S. pyogenes group A antigen shows the classification of Lancefield in their cell walls and causes hemolysis of beta-type hemolysis when cultured on blood agar.

Group A streptococci are bacteria commonly found in the throat and skin. Most GAS infections are relatively mild illnesses such as strep throat and impetigo. However, sometimes these bacteria can cause illness much more severe and potentially life threatening such as necrotizing fasciitis (commonly called "flesh-eating bacteria") and streptococcal toxic shock syndrome.

Bacterial pharyngitis results in a sore throat, fever, malaise, discomfort when swallowing and the presence of nodes in the neck that is caused by a bacterial infection, usually beta-hemolytic streptococcus.

Meningitis is an inflammation of the meninges, most often from infection.

The encephalitis is a brain disease of inflammatory nature involving neurological signs of brain damage. Very often, meningitis are associated with signs of encephalitis, as they may be associated with signs of inflammation of the meninges. This is known as meningoencephalitis.

Etiology

One of the most important bacteria is Streptococcus pyogenes. Its frequency in children is 15% to 30% and adults from 5% to 10%, uncommon after 55 years. It has the ability to cause severe nonsuppurative complications. Other germs include beta hemolytic Streptococcus not group A (group C and G), Neisseria gonorrhoeae, Mycoplasma pneumoniae, Chlamydia pneumoniae, mixed infections with anaerobes (fuso-espirilar association, etc.). Staphylococcus aureus, Streptococcus pneumoniae and Chlamydia trachomatis can be isolated from the oropharynx without being the cause of pharyngitis (Juneja 2010, Pp. 477-512).

How will you identify this bacterium?

Usually, the swab is taken into the throat to the laboratory for testing. And Gram stain is ...