まとめ
ダウン症候群の多くの施設内患者は,A型肝炎に対する抗体を持ち,これらの施設で感染が広範囲に広がっていることを示しています. A型肝炎ウイルス (HAV) の流行は,免疫状態ではなく,施設収容期間に関連しています.
科学分野:
- 肝臓病理学 肝臓病理学
- 免疫学 免疫学とは
- 公衆衛生は公衆衛生である.
背景:
- A型肝炎ウイルス (HAV) は,特に制度化された集団において,公衆衛生上の重大な懸念事項となっています.
- 知的障害のある人におけるHAVの血清発生率を理解することは,標的型予防戦略にとって極めて重要です.
研究 の 目的:
- ダウン症候群の入院患者およびマッチングした対照群におけるA型肝炎抗原 (anti-HA) に対する抗体の有病率を決定する.
- B型肝炎マーカーとの併感染および施設収容期間を含む,抗HAの流行に影響を与える要因を調査する.
主な方法:
- 免疫アデレンスヘマグルーチネーションアッセイは,施設入院患者233人のHA抗体を検出するために使用されました.
- 患者は診断 (ダウン症候群と精神障害の他の原因) とB型肝炎の血清学的マーカー (HBsAg,anti-HBs) によって分類された.
主要な成果:
- 総合的な抗HA流行率は75.1% (175/233) であり,性別や年齢による有意な差異はありませんでした.
- B型肝炎マーカーに陽性だった患者は,抗HAの頻度が著しく高かった.
- Anti-HAの罹患率は,入院期間と強く相関していた.
結論:
- 精神障害者のための閉鎖施設は,しばしばA型肝炎のハイパーエンデミックである.
- この集団におけるA型肝炎の抗体形成は,免疫不全または不成熟によって著しく影響を受けません.
- 施設での入院期間は,A型肝炎の暴露と血清転換の重要な要因です.
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