米国におけるインフルエンザ関連入院件数
William W Thompson1, David K Shay, Eric Weintraub
1Epidemiology and Surveillance Division, National Immunization Program, Centers for Disease Control and Prevention, Atlanta, Ga 30333, USA. wct2@cdc.gov
JAMA
|September 16, 2004
まとめ
インフルエンザは,米国では,特に高齢者の間で,かなりの入院を招き,その割合は時間とともに増加しています. 幼い子供や中年の成人は,同様の入院リスクに直面しており,よりよいインフルエンザ予防の必要性を強調しています.
科学分野:
- エピデミオロジー エピデミオロジー
- 公衆衛生は公衆衛生である.
- 感染症 感染症は感染症です.
背景:
- 呼吸器ウイルス感染症は,米国で毎年多くの入院を引き起こしています.
- インフルエンザウイルス感染症は,この負担に大きく貢献しています.
研究 の 目的:
- 米国におけるインフルエンザに関連した年間入院数を推定する.
- これらの入院を退院カテゴリー,タイプ,年齢層別に分けて分析する.
主な方法:
- 全国病院退院調査 (NHDS) とWHOのインフルエンザ監視データを利用した.
- 推定のための年齢特有のプアソン回帰モデルを使用した.
- 1次性肺炎およびインフルエンザ,および呼吸器/循環器疾患のために入院した人数.
主要な成果:
- 年間平均94,735例のプライマリー,133,900例の肺炎/インフルエンザ入院がインフルエンザと関連していた.
- 226,540件以上のプライマリ入院,294,128件以上の呼吸器系/循環器系入院がインフルエンザに関連していた.
- 85歳以上の個人が入院率が最も高く,5歳未満の子どもは50歳~64歳の人と似た割合を示した.
結論:
- インフルエンザの入院例は,特に高齢者の間で,人口高齢化による部分的な原因で,過去20年間で大幅に増加しています.
- 小児と中年の成人は,インフルエンザの入院率に類似しています.
- 強化されたインフルエンザ予防戦略は,米国における小児と高齢者の両方にとって極めて重要です.
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