About our COVID-19 research

We are currently working on a number of different studies to understand the biology of COVID-19 and the body’s response, as well as the physical and mental health implications of social changes and self-isolation due to COVID-19.

This has only been possible thanks to the incredible commitment and support of our twins. We are very grateful to our twins, who have been taking part in studies even under the present circumstances.


Participant with research nurse at home
A participant on our home visit study watches as a TwinsUK research nurse prepares a swab.

COVID-19 Home Visit Serology Study

We have visited over 500 twins at home to collect samples and test participants for active traces of the virus that causes COVID-19, as well as antibodies.

We are now re-visiting a proportion of participants in order to collect further swabs and samples so that we can see how the body’s response to COVID-19 changes over time.

COVID-19 Personal Experience Study

The COVID-19 Personal Experience (COPE) is a questionnaire study that aims to understand the physical and mental health implications of self-isolation due to COVID-19.

We sent out this questionnaire during the peak of the epidemic in the UK, and we will ask twins to complete it again towards the decline of the epidemic in the UK.

COVID-19 Antibody and Health Study

We are currently preparing a study to investigate symptoms and after-effects of COVID-19, with a focus on fatigue. This will be a short questionnaire that we will repeat after three months to understand how any after-effects or fatigue may persist.

In addition to the short questionnaire, we’re aiming to send TwinsUK participants an antibody self-test kit that gives users results in minutes, subject to test availability.

COVID-19 Symptom Study App

Health science company Zoe has developed a COVID-19 Symptom Tracker app with input from King’s College London and Massachusetts General Hospital. The app tracks in real time how the disease progresses. The aim of the app is to help slow the outbreak, by helping researchers identify:

  • How fast the virus is spreading in your area
  • High-risk areas in the country
  • Who is most at risk, by better understanding symptoms linked to underlying health conditions


The app is available for both TwinsUK members and the general public to use. Participants using the app will record information about their health on a daily basis, including temperature, tiredness and symptoms such as coughing, breathing problems or headaches.

Download the app to your Apple or Android device

The app is available to download from the Apple App Store here.

The app is available to download from Google Play here.

CLICK HERE to see a list of questions asked in the App.

Follow our research updates

Our researchers are working round the clock to analyse all the symptom data that’s coming in.

CLICK HERE to find out about our latest findings.


Find answers to frequently asked questions about the app HERE.