CoMix study - Social contact survey in the UK

Status: Report | First online: 05-10-2020 | Last update: 01-03-2022

This study has not yet been peer reviewed.

We present updated reports from the CoMix social contacts survey. Participants reported the total number of direct contacts that they had on the day before the survey, which are people with whom they had at least a brief face-to-face conversation, or with whom they had any sort of skin-to-skin contact. Week 1 links to a peer-reviewed publication of the CoMix study which provides further details of the study questions and the study protocol.

Analyses are presented every two weeks. We aimed to track the reproduction number and mean contacts over time and explore differences in regions.

Note there was a data issue in reports 62-64 therefore the results are not accurate. We keep them here for historical purposes.

Funding statement

The CoMix study is supported by the Medical Research Council (grant number MC_PC 19065), the National Institute for Health Research (CV220-088) and the European Union’s Horizon 2020 Research and Innovations Programme - project EpiPose (Epidemic Intelligence to Minimize COVID-19’s Public Health, Societal and Economical Impact, No 101003688). UKHSA has been the main funder of CoMix since December 2021.

NOTE: The CoMix study stopped collecting data on the 2nd of March 2022. The final routine report is report 101.

Latest Reports

Comix week 101

Comix week 100

Special Reports

Comix Christmas

Comix contact matrices report

Comix contact matrices available here

Comix - contacts in the workplace

Comix - individuals with high numbers of contacts

Comix - Reconstructing the secondary case distribution of SARS-CoV-2 from heterogeneity in viral load trajectories and social contacts

Recent Reports

Comix week 98

Comix week 96

Comix week 94

Comix week 92

Comix week 89

Older Reports

Note there was a data issue in reports 62-64 therefore the results are not accurate. We keep them here for historical purposes.

Comix week 87

Comix week 85

Comix week 84

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