Streptococcus pyogenes

Group B Summary Group B S. pyogenes are Gram-positive and typically produces short chains or diplococcal pairs. The bacteria produce a type of polysaccharide capsule with a number of different antigens. It is most commonly seen as an infection in newborns. Epidemiology S. pyogenes can exist in the mother’s normal, vaginal flora, and can be transmitted to the newborn during delivery. Transmission is most common in premature infants or when there are ruptured membranes during the delivery process. Occasionally there is a delay period, lasting 1-3 months, before symptoms are seen in the newborn. Manifestations In newborns, S. pyogenes causes fever, lethargy, respiratory distress, and poor feeding. The infection progresses and will evolve into…

Group A Streptococcus is a bacterium that can cause a wide range of infections. People may also carry group A streptococci in the throat or on the skin and have no symptoms of illness. Most group A strep infections are relatively mild illnesses such as strep throat, or impetigo. Occasionally these bacteria can cause severe and even life-threatening diseases. These bacteria are spread through direct contact with mucus from the nose or throat of people who are sick with a group A strep infection…

Streptococcus Equi, More commonly known as Strangles is an infectious equine disease that is characterized by attacking and breaking down the lymphoid tissue of the upper respiratory tract making this disease fatal. Streptococcus is a type of bacterium which causes the disease. Strangles got its name because historically, affected horses were sometimes suffocated from inflamed lymph nodes in their upper airway and trachea.When a horse gets this disease the bacteria cells attach to the tonsil…

Streptococcus pyogenes Streptococcus pyogenes, also known as impetigo, strep throat, etc., is a flesh eating bacteria, that if left untreated, can lead to very serious symptoms. This bacterium is responsible for a wide array of infections. It can cause a sore throat, that is caused by, fever, enlarged tonsils, and sensitive cervical lymph nodes. Scarlet fever, as well as impetigo, and pneumonia are also caused by this bacterium. The less common infections consist of septicaemia, mastitis,…

Streptococcus is a genus of non-motile gram-positive cocci classified by serological types (Lancefield groups A through T), by hemolytic action (a, B, Y) when grown on blood agar, and by reaction to bacterial viruses (phage types 1 to 86). The various species occur in pairs, short chains, and chains. Some are facultative aerobes, and some are anaerobic. Some species also are hemolytic, and others are non-hemolytic. Many species cause disease in humans. Streptococcus faecalis, a…

concluded the genus of the gram positive is Streptococcus. Streptococcus ID introduced many different tests to further identify the gram positive species. One-fourth of the blood agar plate is to determine the hemolysis of the bacteria which is Alpha/Beta because of the partial to complete clearing of the red blood cells. Three-fourth of the plate was used in order to see the susceptibilities of the SXT and Bacitracin discs. There was no zone clearing for SXT which is resistant and 32 mm zone…

Gram-positive cocci are an interesting group of bacteria to study. Some common species include Staphylococcus aureus, Staphylococcus epidermidis, Enterococcus faecalis, Streptococcus pyogenes, and Sarcina lutea. Gram-positive cocci have a gram positive cell wall, cocci morphology and many different styles of grouping. Some species have begun to exhibit a resistance to fluoroquinolone by the use of altering the drug binding site and the use of a membrane pump (Hooper 2002). Thanks to the…

Disease: Strep throat Causative Agent: Streptococcus pyogenes Morphology of Causing Agent: The bacterium S. pyogenes is spherical and emerges in chain-like structures. Gram-staining reveals that this bacterium is gram positive since it shows up dark purple. Transmission: Strep throat is highly contagious and primarily spreads when airborne by coughing or sneezing. Diagnosis: The most common way to diagnose strep throat is by having a trusted doctor perform a rapid antigen test after collecting…

back of the throat and the tonsils. The symptoms of strep throat include sudden pain in the throat without cold symptoms such as coughing or sneezing. Also white or yellow spots on your throat or tonsils, plus a bright red throat or dark red spots on the roof of your mouth or near the back of your mouth towards the throat. This bacterial infection commonly called strep throat is caused from streptococcus pyogenes. Group A streptococcus or GAS is a bacteria commonly found in the throat (strep…

Introduction Streptococcus pyogenes is a bacteria responsible for a wide range of diseases. They include pharyngitis, impetigo, a skin infection, scarlet fever, rheumatic fever, and toxic shock syndrome (TSS) (Burch, 2008). However, the focus of this research will be on necrotizing fasciitis (NF). Although necrotizing fasciitis is rare, it can be lethal. It is commonly known as “flesh-eating bacteria” (touching base, 2001) for its ability to destroy the skin tissue. For the most part, it is…