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Haemophilus meningitis : ウィキペディア英語版 | Haemophilus meningitis
Haemophilus meningitis is a form of Bacterial meningitis caused by the Haemophilus Influenzae bacteria. It is usually (but not always) associated with Haemophilus influenzae type b.〔 〕 Meningitis involves the inflammation of the protective membranes that cover the brain and spinal cord. Haemophilus meningitis is characterized by symptoms including fever, nausea, sensitivity to light, headaches, stiff neck, anorexia, and seizures. Haemophilus meningitis can be deadly, but antibiotics are effective in treating the infection, especially when cases are caught early enough that the inflammation has not done a great deal of damage.〔 Before the introduction of the Hib vaccine in 1985, Haemophilus meningitis was the leading cause of bacterial meningitis in children under the age of five. However, since the creation of the Hib vaccine, only two in every 100,000 children contract this type of meningitis.〔 Five to ten percent of cases can be fatal, although the average mortality rate in developing nations is seventeen percent,〔 mostly due to lack of access to vaccination as well as lack of access to medical care needed to combat the meningitis. ==History and Vaccination==
Before the widespread use of the Hib vaccine, Haemophilus meningitis accounted for 40%-60% of all meningitis cases in children under the age of fifteen, and 90% of all meningitis cases in children under the age of five.〔 Vaccination can reduce incidence. Vaccination has reduced the occurrences of Haemophilus meningitis by 87-90% in countries with widespread access to the Hib vaccine.〔 Rates are still high in areas with limited levels of vaccination. Less-developed countries as well as countries with medical infrastructure that has been damaged in any way, such as from warfare, do not have such widespread access to the vaccine and thus experience higher rates of meningitis cases. Multiple conjugate Hib vaccines are available for use, though, and are extremely effective when given to infants.〔 Additionally, the vaccine has only the side effects of reddened skin and swelling at the location of the injection〔
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Haemophilus meningitis」の詳細全文を読む
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