Streptococcus mutans is considered to be constituent of the "normal" flora of the human mouth‚ which is related with dental caries also regarded as tooth decay. Dental caries is a transmissible and infectious dental disease that affects people of all ages. Streptococcus mutans can be transferred from one person to the another through vertical or horizontal transmission. The transmission path of Streptococcus mutans is to settle itself among human hosts. S. mutans prefers hard non-shedding surfaces
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group A Streptococcus and most often occurs on the face and legs. Erysipelas can also be caused by a cut in the skin‚ problems with drainage through the lymphatic system‚ or skin ulcers. Erysipelas can affect both children and adults. A few symptoms of Erysipelas are fever‚ chills‚ red‚ swollen‚ and painful area of skin with a raised edge‚ or blisters on the affected area. Erysipelas occurs when Group A Streptococcus bacteria penetrates the outer barrier of your skin. Group A Streptococcus bacteria
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How do people "catch pneumonia"? Some cases of pneumonia are contracted by breathing in small droplets that contain the organisms that can cause pneumonia. These droplets get into the air when a person infected with these germs coughs or sneezes. In other cases‚ pneumonia is caused when bacteria or viruses that are normally present in the mouth‚ throat‚ or nose inadvertently enter the lung. During sleep‚ it is quite common for people to aspirate secretions from the mouth‚ throat‚ or nose. Normally
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Rheumatic fever is an autoimmune inflammatory disease that can develop as a complication of insufficient treatment of strep throat or scarlet fever. Strep throat and scarlet fever are caused by an infection with group A streptococcus bacteria. Rheumatic fever is most prevalent in children ages 5- to 15-year-old‚ although it can develop in younger children and adults. Although strep throat is common‚ rheumatic fever is rare in the United States and other developed countries. Nevertheless‚ rheumatic
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Group B Streptococcus Infection‚ Newborn Group B streptococcus (GBS) is a type of bacteria that can cause an infection in a newborn. This bacteria is often found in the vagina and rectum of healthy women‚ but this does not mean that the woman has an infection. Most newborns who are exposed to GBS from their mother do not get infected. In some cases‚ however‚ GBS can cause serious infections in pregnant women and newborns. If the newborn is infected in the first 7 days of his or her life‚ the infection
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However‚ those who are unfortunate may have permanent disabilities including: hearing loss‚ brain damage‚ learning disabilities‚ etc. caused by the infection. There are a number of bacteria’s that result in meningitis such as: streptococcus pneumoniae‚ group B streptococcus‚ Neisseria meningitides‚ Haemophilus influenza‚ and listeria monocytogenes (CDC‚ 2017). The organisms responsible in causing bacterial meningitis colonizes the nasopharynx from there they enter into the blood stream entering the
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syndrome (TSS) is an uncommon but serious systemic infection which can occur in males and females of all ages. Symptoms include fever‚ hypotension and desquamation of the skin. The two main micro-organisms that cause TSS are Staphylococcus aureus and Streptococcus pyogenes. TSS is associated with the use of highly absorbent tampons but can also arise from Staphylococcus aureus infection at non-genital areas (for example wounds).[4] "From a UK population of around 60 million there were about 40 cases reported
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Unit 2 Assignment Critical Thinking 1. Explain why‚ even under ideal conditions‚ Streptococcus grows slowly. Cellular respiration is a process in which glucose is broken down to form an energy that can be used by the cell. There is aerobic respiration and there is anaerobic respiration. Aerobic respiration involves a series of chemical reactions in which oxygen is used to transform into carbon dioxide and H2O. This process generates energy carrying molecules called ATP. Anaerobic respiration
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Adherence • Adhesins/ligands bind to receptors on host cells • Glycocalyx: Streptococcus mutans • Fimbriae: Escherichia coli • M protein: Streptococcus pyogenes • Form biofilms How bacterial pathogens penetrate host defense • • • • • • Capsules Cell wall components Enzymes Antigenic variation Penetration into the host cell cytoskeleton; invasin Intracellular growth Capsules • Prevent phagocytosis Streptococcus pneumoniae Haemophilus influenzae Bacillus anthracis Cell Wall Components
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Melissa Babajko Microbiology 214BA Dr. May June 6‚ 2012 Staphylococcus aureus- Is a facultative anaerobic‚ Gram-positive‚ salt positive‚ cocci shaped bacterium. Staphylococcus aureus is found as normal part of the skin floral in the nasal passages and on the skin. An estimated twenty percent of people naturally have harmless Staphylococcus aureus on their skin and are long-term carries for Staphylococcus aureus. Staphylococcus aureus is the most common strand of Staphylococcus in humans to date
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