According to the company, “Wearables, like Fitbit trackers and smartwatches, are currently being used in research studies from partners like the Scripps Research Translational Institute and the Stanford Medicine Healthcare Innovation Lab to see if wearable data can help detect the early onset of infectious diseases, like the flu and COVID-19, even before symptoms start.”
It is unclear how they might be able to do that since testing for COVID-19 requires a physical swab of the patient’s nose canal, but perhaps there could be data that could suggest that the user is sick and could be display symptoms (that can be gathered from a wearable) that could be related to the virus.
Fitbit is definitely not alone in this because back in March, an app called Cardiogram launched for the Apple Watch where it also attempts to try and detect if the wearer has the flu, and whether or not it could be a sign of a COVID-19 infection.