Streptococcus anginosus may be a beta-hemolytic or non-hemolytic organism. It can ferment glucose or lactose, therefore it has a caramel odor as a distinct feature. Colonization This organism colonizes at the following sites in the human body: Intestinal Tract Urinary tract WATCH WORLD’S BEST VIDEO LECTURE ON THIS TOPIC (SIGNUP REQUIRED) Infections Caused By…
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Streptococcus Bovis was known as Streptococcus Gallolyticus. It is a gram +ve bacilli and has a pathogenic nature. Therefore it causes multiple diseases such as colorectal cancer, endocarditis, and urinary tract infection. It is catalase test -ve. It is also an oxidase test -ve organism, therefore it does not produces hydrogen-peroxide upon oxidase test. Colonization This…
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Streptococcus agalactiae is a gram +ve cocci and causes beta-hemolysis of RBCs in the blood agar. It is a catalase -ve bacterium and therefore it does not respond to the catalase test. It has a polysaccharide capsule because of what, it is of more pathogenic nature. Colonization As this bacteria is pathogenic to humans, therefore it…
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Streptococcus pyogenes is a species of Gram-positive bacteria. These bacteria are aerotolerant and are made up of non-motile and non-sporing cocci. Therefore they are clinically important in human illness. Epidemiology: Throat Genital mucosa Rectum Skin 1% to 5% of healthy individuals have the throat, vaginal, or rectal carriage because it is the site of their…
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Strep throat is an infection of the back of the throat including the tonsils caused by group A streptococcus. Signs and symptoms: Symptoms typically begin one to three days after exposure and last seven to ten days. A sore throat Fever Tonsillar exudates Large cervical lymph nodes Headache Nausea and vomiting Abdominal pain Muscle pain Scarlatiniform rash Palatal…
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