COVID-19 Vaccination Adverse Reactions (CVAR) Dataset#
Last modified: 21 Oct 2026
Adverse reactions to vaccinations against SARS-CoV-2 in England.
1. Summary#
Data were collected about people in England who had an adverse reaction to a SARS-CoV-2 vaccination within the first 15 minutes after administration of the vaccine. Data collected include demographic information, vaccination details, vaccine batch details and information about the adverse reaction.
| Dataset Descriptor | Dataset-specific Information |
|---|---|
| Name of Dataset in TRE | NHSE_CVAR |
| Citation (APA) | Data Services, NHS England (NHSE). (2025). NHS England: COVID-19 Vaccination Adverse Reactions. UK Longitudinal Linkage Collaboration (UK LLC). https://doi.org/10.71760/ukllc-dataset-00381-04 |
| Download Citation | Citeproc JSON BibTeX RIS |
| Series | NHS England |
| Owner | NHS England |
| Copyright | Copyright © (2026), NHS England. Data re-used with the permission of NHS England. All rights reserved. |
| Temporal Coverage in the TRE | 12/2020 - 01/2023 |
| Geographical Coverage | England |
| Participant Count | 74 |
| Number of Variables | 33 |
| Number of Observations | 154 |
| Key Link | https://digital.nhs.uk/services/data-access-request-service-dars/dars-products-and-services/data-set-catalogue/covid-19-vaccination-adverse-reactions |
| Keywords | None |
| Latest Extract Date | 2024-04-26 |
| Specific Restrictions to Data Use | Only to be used in research with a focus on COVID-19. |
| Build a Data Request | https://explore.ukllc.ac.uk/ |
2. Metrics#
| Cohort | Participant Count |
|---|---|
| AIRWAVE | -1 |
| BCS70 | -1 |
| BIB | -1 |
| ELSA | -1 |
| EPICN | -1 |
| EXCEED | -1 |
| GLAD | 66 |
| MCS | -1 |
| NCDS58 | -1 |
| NEXTSTEP | -1 |
| NIHRBIO_COPING | -1 |
| TEDS | -1 |
| TRACKC19 | -1 |
| TWINSUK | -1 |
| UKHLS | -1 |
| UKREACH | 22 |
3. Version History#
| Version | 1 | 2 | 4 |
|---|---|---|---|
| Version Date | 21 Dec 2022 | 13 Apr 2023 | 09 Sep 2025 |
| Number of Variables | 30 | 31 | 33 |
| Number of Observations | 98 | 100 | 154 |
| DOI | 10.71760/ukllc-dataset-00381-01 | 10.71760/ukllc-dataset-00381-02 | 10.71760/ukllc-dataset-00381-04 |
| Change Log | 10.71760/ukllc-dataset-00381-01/activities | 10.71760/ukllc-dataset-00381-02/activities | 10.71760/ukllc-dataset-00381-04/activities |
4. Documentation#
We are currently building a documentation storage system which will host useful documents related to datasets and data owners. We will surface these documents on Guidebook.
5. Useful Syntax#
Below we will include syntax that may be helpful to other researchers in the UK LLC TRE. For longer scripts, we will include a snippet of the code plus a link to the UK LLC GitHub repository where you can find the full scripts.