The COVID Symptom Tracker (https://covid.joinzoe.com/) mobile application was designed by doctors and scientists at King's College London, Guys and St Thomas’ Hospitals working in partnership with ZOE Global Ltd – a health science company. This research is led by Dr Tim Spector, professor of genetic epidemiology at King’s College London and director of TwinsUK a scientific study of 15,000 identical and non-identical twins, which has been running for nearly three decades. The dataset schema includes: - Demographic Information (Year of Birth, Gender, Height, Weight, Postcode) - Health Screening Questions (Activity, Heart Disease, Diabetes, Lung Disease, Smoking Status, Kidney Disease, Chemotherapy, Immunosuppressants, Corticosteroids, Blood Pressure Medications, Previous COVID, COVID Symptoms, Needs Help, Housebound Problems, Help Availability, Mobility Aid) - COVID Testing Conducted - How You Feel? - Symptom Description - Location Information (Home, Hospital, Back From Hospital) - Treatment Received Dataset Access Request: https://healthdatagateway.org/detail/9b604483-9cdc-41b2-b82c-14ee3dd705f6