糞便中に5週間、35日と。
これの中央値20日、最長37日で近いですね。
(↓ これが、PCRなのか、便なのか私には読み取れず)
Median duration of viral shedding was 20·0 days
The longest observed duration of viral shedding in survivors was 37 days.
https://thelancet.com/journals/lancet/article/PIIS0140-6736(20)30566-3/fulltext#back-bib33…