This publication has been produced by Antimicrobial Resistance and Healthcare Associated Infection (ARHAI) Scotland, part of NHS National Services Scotland. ARHAI publications are not made available under terms of the OGL.

About this release

This release provides data for probable and definite hospital onset COVID-19 cases (first positive specimen of COVID-19 episode taken on day eight of an inpatient stay or later) in Scotland from week ending 1 March 2020 to week ending 02 October 2022. A system for monitoring COVID-19 is critical to tracking hospital transmission and has informed development of infection prevention and control (IPC) measures during the pandemic. The transmission of COVID-19 is thought to occur mainly through respiratory droplets generated by coughing and through contact with contaminated surfaces. Further information on SARS-CoV-2 and current IPC guidance can be found in the National Infection Prevention and Control Manual.

The content of this report has evolved during the pandemic to account for changes in testing for SARS-CoV-2. Due to the cessation of almost all population testing for SARS-CoV-2 at the end of April 2022, the inclusion of community onset cases in this report was discontinued in May 2022. Additionally, following the pausing of almost all routine asymptomatic testing in hospitals at the end of September 2022, the inclusion of non-hospital onset and indeterminate hospital onset cases (cases where first specimen of COVID-19 episode taken on days one to seven of an inpatient stay) has also been discontinued.

Main points

Breakdown of probable and definite hospital onset COVID-19 cases by hospital onset status – weekly data

The total number of probable and definite hospital onset COVID-19 cases reported to ARHAI Scotland this week (week ending 02 October 2022) was 201. Of these:

  • 47 were reported as probable hospital onset (first positive specimen of COVID-19 episode on days 8 to 14 of admission to NHS board). In the previous week (week ending 25 September 2022) there were 42.
  • 154 were reported as definite hospital onset (first positive specimen of COVID-19 episode on day 15 of admission to NHS board or later). In the previous week (week ending 25 September 2022) there were 119.

Figure 1: Epidemic curve of probable and definite hospital onset COVID-19 cases (first positive specimen of COVID-19 episode taken on day eight of inpatient stay or later), by onset status: week ending 01 March 2020 to week ending 02 October 2022 (n=15,984).1,2

1. Source of data are Corporate Data Warehouse (CDW) that contains test results from Electronic Communication of Surveillance in Scotland (ECOSS) and Rapid Admission Preliminary Inpatient Data (RAPID) or local admission data.
2. Data include any reinfection episodes from samples taken during an inpatient stay in hospital

Background

Antimicrobial Resistance and Healthcare Associated Infection (ARHAI) Scotland, part of National Services Scotland, works closely with Public Health Scotland to deliver the COVID-19 response. Local and national monitoring in hospital settings is required to reduce COVID-19 infections.

Further information

Find out more on the COVID-19 pages on the PHS website.  

The next release of this publication will be 2 November 2022

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If you have an enquiry relating to this publication, please contact NSS.ARHAIdatateam@nhs.scot.

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Older versions of this publication

Versions of this publication released before 16 March 2020 may be found on the Data and Intelligence, Health Protection Scotland or Improving Health websites.

Last updated: 24 October 2022
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