Research and analysis

ONS: Impact of Delta and calendar time on symptoms reported by individuals testing swab positive – preliminary analysis of data (to 12 July 2021), 22 July 2021

Paper prepared by the Office for National Statistics (ONS).

• From: Scientific Advisory Group for Emergencies
• Published: 19 August 2021
• Last updated: 20 August 2021 — See all updates

Documents

ONS: Impact of Delta and calendar time on symptoms reported by individuals testing swab positive: preliminary analysis of data to 12 July 2021, 22 July 2021

PDF, 1.58 MB, 12 pages

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Details

Paper from ONS on the Delta variant of concern. It was considered at SAGE 94 on 22 July 2021.

The paper is the assessment of the evidence at the time of writing. As new evidence or data emerges, SAGE updates its advice accordingly.

This paper was previously published on the Nuffield Department of Medicine website.

To support this, ONS has published a blog post on the Delta variant and vaccine effectiveness giving an overview of what the Coronavirus Infection Survey can tell us.

These documents are released as pre-print publications that have provided the government with rapid evidence during an emergency. These documents have not been peer-reviewed and there is no restriction on authors submitting and publishing this evidence in peer-reviewed journals.

Published 19 August 2021
Last updated 20 August 2021 + show all updates

1. 20 August 2021

   This paper was released as part of a batch of SAGE documents on 20 August 2021.

2. 19 August 2021

   First published.