Definition Strep throat is caused by Group A Streptococcus bacteria. It is the most common bacterial infection of the throat. Alternative Names Pharyngitis - streptococcal; Streptococcal pharyngitis Causes, incidence, and risk factors Strep throat is most common in children between age 5 and 15, although anyone can get it. Strep throat is spread by person-to-person contact with nasal secretions or saliva. It commonly spreads among family or household members.
Definition Group B streptococcal septicemia is a severe bacterial infection that affects newborn infants . See also: Neonatal sepsis Alternative Names Group B strep; GBS Causes, incidence, and risk factors The term "septicemia" refers to an infection in the bloodstream that may travel to different body organs. Group B streptococcal septicemia is caused by the bacterium Streptococcus agalactiae , which is commonly called "group B strep" or GBS. A newborn with septicemia is very sick. GBS is commonly found in adults and older children, where it does not usually cause infection. There are two ways in which it may be passed to a newborn baby: The infant can become infected as he or she passes through the birth canal. In this case, babies become ill between birth and 6 days of life (most often in the first 24 hours). This is called "early-onset" GBS disease. The infant may also become infected after delivery by coming into contact with people who carry the GBS germ. In this case symptoms appear late...
Definition Peritonsillar abscess is a collection of infected material in the area around the tonsils. See also: Ludwig's angina Retropharyngeal abscess Alternative Names Quinsy; Abscess - peritonsillar Causes, incidence, and risk factors Peritonsillar abscess is a complication of tonsillitis . It is most often caused by a type of bacteria called group A beta-hemolytic streptococcus . Peritonsillar abscess is usually a disease of older children, adolescents, and young adults. It has become uncommon with the use of antibiotics to treat tonsillitis.
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