Group A Streptococcus (GAS) Essay

Streptococcus Pyogenes: Multi-Purpose Monsters Streptococcus pyogenes is a type of group A streptococci that causes many infectious diseases. This bacteria is commonly found in a variety of organisms, but is usually harmless unless the organisms defenses are compromised. When detrimental, group A streptococci cause infections such as impetigo, ecthyma, scarlet fever, and necrotizing fasciitis. Each of these infections displays different symptoms and requires different treatment. These treatments

Bennett). Streptococcal exotoxins, also known as superantigens, are central mediators of the systematic effects with GAS (Group A Streptococci) infections. They are able to stimulate a large proportion of the T-cell population and produce an uncontrollable response with towering amounts of cytokines. Twelve superantigens produced by GAS have been discovered, and abundant GAS strain contain genes encoding four to six different

Streptococcus pyogenes is Gram-positive nonmotile bacterium found in the “Group A Streptococci (GAS)” class of streptococcus bacteria. S. pyogenes is a facultative anaerobe and is classified as a beta-hemolytic streptococcus. The structure of this bacterium includes its hyaluronic acid capsule, cocci shape, and its formation in chains. According to microbiologist Kenneth Todor, Streptococcus pyogenes is found in 5-15% individuals as an indigenous flora, located in the respiratory tract. If Streptococcus

also called scarlatina, is a disease that is caused by Group A Streptococcus Bacteria. It is developed by patients who have contracted a severe cause of strep throat which then get a bright red rash, hence the name scarlet fever, as well as a high fever and sore throat. Scarlet fever primarily infects patients from the ages of five to fifteen years old. The red rash is caused by a Gram-positive toxin found within the Group A streptococcus bacteria. The pathogen requires a blood rich medium to exist

Group A streptococcus (GAS) is an important human pathogen rank in the top ten of deadly infectious disease around the world despite being sensitive to most antibiotics that are used clinically. The major population will have suffered a group A streptococcus infection one time or another with non-life threating minor complications in the presence of antibiotic therapy but in some instances it goes on and causes several immune-mediated disorders associated with rheumatic fever affecting a diverse

Abstract The assigned unknown in tube #3 was classified as a gram positive bacteria shaped as Cocci Chains. Enterococcaceae is the family of the streptococcus faecalis. The gram positive bacteria included tests such as the Catalase, Coagulase, Mannitol Salt Agar (MSA), Streptococcus Faecalis Medium (SFM), and the Bile Esculin test. The purpose of these tests was to distinguish which unknowns were positive vs negative as well as to determine the morphology or shape of the unknown bacterias. Introduction

Streptococcal Infections (Invasive group A strep, GAS) Larissa, Hirsch. "Toxic Shock Syndrome." KidsHealth - the Web's Most Visited Site about Children's Health. Jan. 2011. Web.17 Oct. 2011. <http://kidshealth.org/parent/infections/skin/toxic_shock.html>. "Toxic Shock Syndrome - PubMed Health." PubMed Health. 11 Sept. 2010. Web.17 Oct. 2011. <http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0001676/>. Venkataraman, Ramesh, and Michael R. Pinsky. "Toxic Shock Syndrome

sores. There are multiple types of bacteria that can cause Necrotizing Fasciitis but the most common is streptococcus pyogenes also called group A streptococci. Group A streptococcus (GAS) is responsible for over a hundred different types of bacterial infections, ranging from minor illnesses such as strep throat or impetigo to serious illnesses like pneumonia and necrotizing fasciitis (C.D.C). GAS is a facultative gram positive coccus and ß-Hemolytic organism. This rare disease can be caused by more

involves the bacterium group A Streptococcus, the most common and deadly cause of necrotizing fasciitis. Type III is closely related with the bacterium Clostridium, and usually appears in patients with colon cancer or leukemia. Lastly, type IV comprises all of the lesser known causes, such as various fungi and a few other types of bacteria (3). Encompassing all four classifications, the most well-known strains of bacteria that cause necrotizing fasciitis include group A Streptococcus, Staphylococcus auerus

secondary to other viral infections like upper respiratory tract infections (URTI) [3]. It may result in serious complications as mastoiditis, meningitis or intracranial abscess [4]. In the pre-antibiotic era of the early 1900s, β-haemolytic group A Streptococcus