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Evidence found and GRADE certainty

4,751 questions · 12,775 findings · 807 reviews · Headline outcomes only

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No studies found 3,413 · 26.7%GRADE not reported 709 · 5.5%Very low 3,483 · 27.3%Low 3,165 · 24.8%Moderate 1,628 · 12.7%High 377 · 3%

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Test‐based attendance vs routine isolation after contact with a SARS‐CoV‐2 positive person

Rates of symptomatic PCR‐positive SARS‐CoV‐2 infection (over 13‐week · school staff

It is very uncertain whether test‐based attendance changes rates of symptomatic PCR‐positive SARS‐CoV‐2 infection (over 13‐week compared with routine isolation after contact with a SARS‐CoV‐2‐positive person (very low certainty).

1 finding from 1 review

Test‐based attendance vs routine isolation after contact with a SARS‐CoV‐2 positive person

Confirmed SARS‐CoV‐2 infection · school staff

It is very uncertain whether test‐based attendance changes rates of any PCR‐positive SARS‐CoV‐2 infection (over 13‐week compared with routine isolation after contact with a SARS‐CoV‐2‐positive person (very low certainty).

1 finding from 1 review