Streptococcus pyogenes

Slideshow By: Dariana Brown

WHAT IS STREPTOCOCCUS PYOGENES?
Streptococcus pyogenes: A common bacteria of the skin that causes strep throat (streptococcal pharyngitis), impetigo, other skin infections, rheumatic fever, scarlet fever and many others.Streptococcus pyogenes bacteria at 900x magnification

NECROTIZING FASCIITIS
Streptococcus pyogenes can cause what is known as necrotizing fasciitis.Necrotizing fasciitis is a contagious flesh-eating bacteria.It is caused when the bacteria gets into even a minor cut such as a pin prick. The bacteria will then begin to grow and release toxins that can interfere with the blood flow to tissue, directly kill tissue, and it can break down the material in the tissue making the bacteria spread rapidly. This could lead to you eventually going into shock.

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About one in four people who get this infection die from it.This infection is very rare, but very serious.

STREP PHARYNGITIS
Also known as strep throatSymptoms fever, swollen lymph nodes, and red throatIs acquired when you inhale the aerosols emitted by other infected peopleAfter this infection has cleared up 1-3% people develop rheumatic feverComparison of healthy throat and strep throat

IMPETIGO
Common skin infection in young childrenSpreads through direct contactReddened skin commonly on arms, hands, and faceThe itchy skin oozes and forms a yellow crust

ERYSIPELAS
Inflammation and infection of the top layers of the skinUsually starts where there is a cut or break in the skinThis infection produces very hot, red skin on the face,arms, or legsInfected parts are raised with sharp bordersThis infection can become chronic
Older woman with erysipelas

CELLULITIS
Invades body through a cut or scrapeIt occurs on the deepest layers of the skin and usually occurs on face or legsInfected area quickly becomes red and hot to the touchLooks shiny and swollenSymptoms: fever, chills, and muscle aches

SCARLET FEVER
It is uncommon, but painfulProduces sore throat, fever, headache, and muscle achesA rash will appear on neck and chest and will spreadIt will be a pinkish-red rash and it feels like sandpaperIt also turns red with pressureAs reported by Merck Manual Medical Library the papillae on your tongue will swell and it is called strawberry tongue
Strawberry tongue

TOXIC SHOCK SYNDROME
Uncommon, but seriousIn association with infections elsewhere in the body, usually the skinFever, confusion, very low blood pressure, kidney and liver failure, difficulty breathing, and bleeding problemsThis disease can easily lead to shock and death

STREPOCOCCI
Virulence factors of Group A streptococci:M protein, fibronectin-binding protein (protein F) and lipoteichoic acid for adherenceHyaluronic acid capsule as an immunological disguise and to inhibit phagocytosisInvasions such as streptokinase, streptodornase, hyaluronidase, and streptolysins

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Exotoxins, such as pyrogenic toxin which causes the rash of scarlet fever systemic toxic shock syndrome

RHEUMATIC FEVER
It is an inflammatory disease that can develop as a complications of inadequately treated strep throatMost common with children ages 5-15 years oldCan cause permanent heart damageSymptoms: inflammation of the heart, joints(most often in the ankles, knees, elbows, or the wrist), skin, or the central nervous system

!!WARNING!!
THE PICTURES THAT ARE ABOUT TO BE SHOWN ARE VERY GRAPHIC!!!!!!!!!!!

ADDITIONAL PICTURES
Necrotizing fasciitisImpetigo Cellulitis

WORK CITED
"Definition of Streptococcus pyogenes." MedicineNet.com. MedicineNet, Inc., 1996-2011. Web. 8 Jul 2011. . "Necrotizing soft tissue infection." Pub Med Help. National Center for Biotechnology Information, December 17, 2009. Web. 8 Jul 2011. .

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"Diseases Caused by Streptococus Pyogenes ." Air Microbiology. N.p., n.d. Web. 14 Jul 2011. . "Rheumatic Fever." MayoClinic.com. N.p., 1998-2010. Web. 16 Jul 2011. .

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"Disease caused by Streptococcus pyogenes." Yahoo! Directory. N.p., n.d. Web. 16 Jul 2011. .

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