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資 料３－３ 令和４年度第３回安全技術調査会の審議結果について (63 ページ)
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感染後の感染性ウイルスの排出期間②
5
Ragon Institute, Cambridge, MA.
Brigham and Women's Hospital, Boston, MA.
3 Massachusetts General Hospital, Boston, MA.
1
2
Figure 1
Viral Decay and Time to Negative Viral Culture. Panel A
shows viral-load decay from the time of the first positive
polymerase-chain-reaction (PCR) assay. Viral loads from nasalswab samples obtained from individual participants are shown.
Each circle or triangle represents a sample obtained on the
specified day. The median viral load at each time point for each
variant is also shown. LOD denotes limit of detection. Panels B
through E show Kaplan–Meier survival curves for the time from
an initial positive PCR assay to a negative PCR assay, according
to viral variant (Panel B) and vaccination status (Panel D), and
the time from an initial positive PCR assay to a negative viral
culture, according to viral variant (Panel C) and vaccination
status (Panel E). In all panels, shaded areas indicate 95%
confidence intervals. Sequencing showed that all omicron
variant strains were the subvariant BA.1, inclusive of
sublineages.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9258747/
60
5
Ragon Institute, Cambridge, MA.
Brigham and Women's Hospital, Boston, MA.
3 Massachusetts General Hospital, Boston, MA.
1
2
Figure 1
Viral Decay and Time to Negative Viral Culture. Panel A
shows viral-load decay from the time of the first positive
polymerase-chain-reaction (PCR) assay. Viral loads from nasalswab samples obtained from individual participants are shown.
Each circle or triangle represents a sample obtained on the
specified day. The median viral load at each time point for each
variant is also shown. LOD denotes limit of detection. Panels B
through E show Kaplan–Meier survival curves for the time from
an initial positive PCR assay to a negative PCR assay, according
to viral variant (Panel B) and vaccination status (Panel D), and
the time from an initial positive PCR assay to a negative viral
culture, according to viral variant (Panel C) and vaccination
status (Panel E). In all panels, shaded areas indicate 95%
confidence intervals. Sequencing showed that all omicron
variant strains were the subvariant BA.1, inclusive of
sublineages.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9258747/
60