出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2013/06/18 17:43:31」(JST)
Adenovirus infection | |
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Classification and external resources | |
ICD-10 | B97.0 |
MeSH | D000257 |
Adenovirus infections most commonly cause illness of the respiratory system; however, depending on the infecting serotype, they may also cause various other illnesses and presentations.
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Apart from respiratory involvement, illnesses and presentations of adenovirus include gastroenteritis,[1] conjunctivitis, cystitis, and rash illness. Symptoms of respiratory illness caused by adenovirus infection range from the common cold syndrome to pneumonia, croup, and bronchitis. Patients with compromised immune systems are especially susceptible to severe complications of adenovirus infection. Acute respiratory disease (ARD), first recognized among military recruits during World War II, can be caused by adenovirus infections during conditions of crowding and stress.
Pharyngoconjunctival fever is a specific presentation of adenovirus infection, manifested as:
It usually occurs in the age group 5-18. It is often found in summer camps and during the spring and fall in schools. In Japan, the illness is commonly referred to as "pool fever" as it is often spread via public swimming pools.
Although epidemiologic characteristics of the adenoviruses vary by type, all are transmitted by direct contact, fecal-oral transmission, and occasionally waterborne transmission. Some types are capable of establishing persistent asymptomatic infections in tonsils, adenoids, and intestines of infected hosts, and shedding can occur for months or years. Some adenoviruses (e.g., serotypes 1, 2, 5, and 6) have been shown to be endemic in parts of the world where they have been studied, and infection is usually acquired during childhood. Other types cause sporadic infection and occasional outbreaks; for example, epidemic keratoconjunctivitis is associated with adenovirus serotypes 8, 19, and 37. Epidemics of febrile disease with conjunctivitis are associated with waterborne transmission of some adenovirus types, often centering around inadequately chlorinated swimming pools and small lakes. ARD is most often associated with adenovirus types 4 and 7 in the United States. Enteric adenoviruses 40 and 41 cause gastroenteritis, usually in children. For some adenovirus serotypes, the clinical spectrum of disease associated with infection varies depending on the site of infection; for example, infection with adenovirus 7 acquired by inhalation is associated with severe lower respiratory tract disease, whereas oral transmission of the virus typically causes no or mild disease. Outbreaks of adenovirus-associated respiratory disease have been more common in the late winter, spring, and early summer; however, adenovirus infections can occur throughout the year.[2]
"Ad14 (for adenovirus serotype 14), has caused at least 140 illnesses in New York, Oregon, Texas and Washington, according to a report from the Centers for Disease Control and Prevention. The illness made headlines in Texas in September, when a so-called "boot camp flu" sickened hundreds at Lackland Air Force Base in San Antonio. A 19-year-old trainee died."[3]
Several adenoviruses, especially adenovirus serotype 36 (Adv36), have been shown to cause obesity in animals, and are associated with human obesity.[4][5]
Antigen detection, polymerase chain reaction assay, virus isolation, and serology can be used to identify adenovirus infections. Adenovirus typing is usually accomplished by hemagglutination-inhibition and/or neutralization with type-specific antisera. Since adenovirus can be excreted for prolonged periods, the presence of virus does not necessarily mean it is associated with disease.
Most infections are mild and require no therapy or only symptomatic treatment. Because there is no virus-specific therapy, serious adenovirus illness can be managed only by treating symptoms and complications of the infection. Deaths are exceedingly rare but have been reported.[6]
Safe and effective adenovirus vaccines were developed for adenovirus serotypes 4 and 7, but were available only for preventing ARD among US military recruits,[7] and production stopped in 1996.[8] Strict attention to good infection-control practices is effective for stopping nosocomial outbreaks of adenovirus-associated disease, such as epidemic keratoconjunctivitis. Maintaining adequate levels of chlorination is necessary for preventing swimming pool-associated outbreaks of adenovirus conjunctivitis.
Adenovirus can cause severe necrotizing pneumonia in which all or part of a lung has increased translucency radiographically, which is called Swyer-James Syndrome.[9] Severe adenovirus pneumonia also may result in bronchiolitis obliterans, a subacute inflammatory process in which the small airways are replaced by scar tissue, resulting in a reduction in lung volume and lung compliance.[9]
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リンク元 | 「結膜炎」「咽頭結膜熱」「PCF」 |
see. マイナーエマージェンシー第1版 p.65 SOP.174
疾患名 | 病原体 | 潜伏期 | 病型 | 症状、経過 | |||
感染性結膜炎 | 流行性角結膜炎 | epidemic keratoconjunctivitis | はやりめ | アデノウイルス8,19,37型(ときに4型) | 7-14日 | 急性濾胞性結膜炎 | 眼脂、流涙、羞明。眼瞼腫瘤、結膜充血、浮腫、結膜の小出血斑。耳前リンパ節の腫脹と圧痛。2-4週間で消退。発症後10日後に角膜に点状上皮化混濁。 |
咽頭結膜熱 | pharyngoconjunctival fever | プール熱 | アデノウイルス3型(ときに4,7型) | 5-6日 | 急性結膜炎 | 急性結膜炎、咽頭炎、発熱。点状上皮化混濁は少ない。 | |
急性出血性結膜炎 | acute hemorrhagic conjunctivitis | エンテロウイルス70型 | 1日 | 球結膜下出血。眼球は浮腫状、結膜充血、濾胞形成は軽度。耳前リンパ節腫脹軽度。発症より3-4日にびまん性の多発性びらん。眼痛、異物感、羞明。約1週間で治癒。罹患後2,3週間後に四肢の弛緩性の運動麻痺や脳神経麻痺があり得る。 | |||
トラコーマ | trachoma | ||||||
封入体結膜炎 | inclusion conjunctivitis | ||||||
新生児封入体結膜炎 | neonatal inclusion conjunctivitis | ||||||
細菌性結膜炎 | bacterial conjunctivitis | ||||||
淋菌性結膜炎 | gonococcal conjunctivitis | ||||||
新生児膿漏眼 | blennorrhea of the newborn | ||||||
アレルギー性結膜疾患 | アレルギー性結膜炎 | allergic conjunctivitis | |||||
春季カタル | vernal conjunctivitis | ||||||
その他の結膜炎 | フリクテン性結膜炎 | phlyctenular conjunctivitis | 束状結膜炎 | ||||
慢性濾胞性結膜炎 | chronic follicular conjunctivitis | ||||||
Stevens-Johnson症候群 | Stevens-Johnson syndrome | ||||||
眼類天疱瘡 | ocular pemphigoid | ||||||
結膜弛緩症 | conjunctivochalasis |
俗称 | 病原体 | 好発年齢 | 季節性 | 潜伏期 | 症状 | 感染症法 | 学校保健安全法 | 出席停止 | ||
流行性角結膜炎 | EKC | はやり目 | アデノウイルス8型 | なし | 春~夏 | 1-2週間 | 漿液性の目脂、流涙、羞明。乳幼児では発熱、感冒様症状、下痢、眼瞼結膜に偽膜形成。 眼瞼:腫脹。結膜:充血、浮腫、結膜の小出血斑。角膜:(発症約10日後)点状上皮下混濁。リンパ節:耳前リンパ節腫脹 |
五類感染症(眼科定点) | 第三類 | 医師が感染のおそれがないと認めるまで |
咽頭結膜熱 | PCF | プール熱 | アデノウイルス3,4,7型 | 小児 | 夏(基本的に通年) | 1週間 | 発熱、咽頭炎、結膜炎 | 五類感染症(小児科定点) | 第二種 | 出席停止は主要症状が消退した後二日を経過するまで |
急性出血性結膜炎 | AHC | コクサッキーウイルスA群24型、エンテロウイルス70型 | 成人 | なし | 1-2日 | 結膜下出血を伴う急性濾胞性結膜炎 | 五類感染症(眼科定点) | 第三類 | 医師が感染のおそれがないと認めるまで |
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