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Pneumococcal infection is an infection caused by the bacterium Streptococcus pneumoniae. [1]S. pneumoniae is a common member of the bacterial flora colonizing the nose and throat of 5–10% of healthy adults and 20–40% of healthy children. [2]
Streptococcus pneumoniae can be differentiated from the viridans streptococci, some of which are also alpha-hemolytic, using an optochin test, as S. pneumoniae is optochin-sensitive. S. pneumoniae can also be distinguished based on its sensitivity to lysis by bile, the so-called "bile solubility test".
Viridans streptococci can be differentiated from Streptococcus pneumoniae using an optochin test, as viridans streptococci are optochin-resistant; they also lack either the polysaccharide-based capsule typical of S. pneumoniae or the Lancefield antigens of the pyogenic members of the genus. [5]
"The symptoms of pneumonia can vary widely depending on the patient's age, other conditions, and the type of infection," Dr. Zweig added. He explained that symptoms can progress very quickly in ...
What are the signs and symptoms of pneumonia? Symptoms can range from mild to serious, according to the U.S. National Heart, Lung, and Blood Institute, and may include: cough without mucus. fever ...
Optochin (or ethylhydrocupreine hydrochloride) is a derivative of quinine introduced in 1911 by Morgenroth and Levy with the intention to treat pneumococci infection. [1] In very high dilutions, it inhibits the growth of representatives of all four groups of pneumococci in vitro .
The respiratory illness caused by mycoplasma pneumoniae bacteria is often called walking pneumonia because it tends to be milder than other lung infections. Patients may feel run down, with a ...
Toxic shock syndrome (TSS) is a condition caused by bacterial toxins. [1] Symptoms may include fever, rash, skin peeling, and low blood pressure. [1] There may also be symptoms related to the specific underlying infection such as mastitis, osteomyelitis, necrotising fasciitis, or pneumonia.
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