ワシントン州におけるSARS-CoV-2の暗号的感染
Trevor Bedford1,2,3, Alexander L Greninger4,5, Pavitra Roychoudhury4,5
1Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA. tbedford@fredhutch.org.
まとめ
ワシントン州における最も重度の急性呼吸器症候群コロナウイルス2型 (SARS-CoV-2) 感染症は,単一の感染イベントから発生した. この単一の導入は,広範な監視が始まる前に,局所的な拡散をもたらしました.
科学分野:
- ウイルス学
- 流行病学について
- ゲノミクス
背景:
- 重症急性呼吸器症候群コロナウイルス2型 (SARS-CoV-2型) は2019年末に発生し,世界中に広がった.
- ゲノム配列決定は ウイルスの伝染歴を再構築するために重要です
- 疫病を抑えるには 効果的な監視が不可欠です
研究 の 目的:
- ワシントン州におけるSARS-CoV-2の起源と早期の感染動態を分析する.
- 地域へのSARS-CoV-2の導入数を決定する.
- 疫病の蔓延を抑えるための 監視の効果を理解する
主な方法:
- ワシントン州の453のSARS-CoV-2ゲノムの分析.
- 2020年2月20日から3月15日の間に収集されたゲノムデータ.
- 伝染経歴を復元する 系統遺伝分析
主要な成果:
- サンプルのほとんどのSARS-CoV-2感染は,単一の導入イベントにたどり着きました.
- 導入はおそらく2020年1月下旬か2月上旬に起こった.
- ウイルスは 活発な監視の前に 局所的に広がったのです
結論:
- ワシントン州で1回の感染がSARS-CoV-2の発生に起因した.
- 早期の局所感染は,活発なコミュニティ監視が実施される前に発生した.
- ゲノム伝染病学はウイルスの拡散と起源について重要な洞察を提供します.
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