Apologies if this has been done, but I haven't seen it here.
To help researchers track the spread of COVID 19, you can download an app to your phone. I struggled to find it in Google Play store but if you search for "C19 COVID SYMPTOM TRACKER" in your browser you should be able to find it. https://covid.joinzoe.com/
You then reply every day to say if you are feeling well or not and it helps to researchers to plot the spread of the virus.