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 COVID-19 hospital onset cases in Scotland from week ending 1 March 2020 to week ending 03 April 2022.  A system for monitoring COVID-19 is critical to tracking hospital transmission. This helps to inform infection prevention and control measures. The transmission of COVID-19 is thought to occur mainly through respiratory droplets generated by coughing and through contact with contaminated surfaces. Infections have been widely reported in the community. Further information on the epidemiology of COVID-19 in healthcare settings can be found on the Public Health Scotland website.

Main points

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

The total number of COVID-19 cases reported to ARHAI Scotland this week (week ending 03 April 2022) was 50,451. Of these:

  • 49,469 (98.1% of all COVID-19 cases) were reported as community onset (first positive specimen of COVID-19 episode taken in the community), of which 5,363 (10.8% of community onset cases) were reinfections. In the previous week (week ending 27 March 2022) there were 70,416 (98.3% of all COVID-19 cases) of which 7,480 (10.6% of community onset cases) were reinfections.
  • 469 (0.9% of all COVID-19 cases) were reported as non-hospital onset (first positive specimen of COVID-19 episode on day 1 or 2 of admission to NHS board), of which 39 (8.3% of non-hospital onset cases) were reinfections. In the previous week (week ending 27 March 2022) there were 594 (0.8% of all COVID-19 cases), of which 39 (6.6% of non-hospital onset cases) were reinfections.
  • 124 (0.2% of all COVID-19 cases) were reported as indeterminate hospital onset (first positive specimen of COVID-19 episode on days 3 to 7 of admission to NHS board), of which 3 (2.4% of indeterminate hospital onset cases) were reinfections. In the previous week (week ending 27 March 2022) there were 136 (0.2% of all COVID-19 cases), of which 4 (2.9% of indeterminate hospital onset cases) were reinfections.
  • 105 (0.2% of all COVID-19 cases) were reported as probable hospital onset (first positive specimen of COVID-19 episode on days 8 to 14 of admission to NHS board), of which 5 (4.8% of probable hospital onset cases) were reinfections. In the previous week (week ending 27 March 2022) there were 132 (0.2% of all COVID-19 cases), of which 11 (8.3% of probable hospital onset cases) were reinfections.
  • 284 (0.6% of all COVID-19 cases) were reported as definite hospital onset (first positive specimen of COVID-19 episode 15 or more days after admission to NHS board), of which 17 (6.0% of definite hospital onset cases) were reinfections. In the previous week (week ending 27 March 2022) there were 341 (0.5% of all COVID-19 cases), of which 25 (7.3% of definite hospital onset cases) were reinfections.

Figure 1: Epidemic curve of COVID-19 cases with first positive specimen of COVID-19 episode taken during an inpatient stay, by onset status: week-ending 01 March 2020 to week-ending 3 April 2022 (n=31,908). 1,2,3

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. The community cases are not represented in this chart as the first sample was not taken in a hospital setting.
3. Data from 29th November 2021 onwards include any reinfection episodes taken in hospital settings.

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

The next release of this publication will be 4 May 2022.

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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: 07 October 2022
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