by Douglas B Quine
In March 2020 when COVID-19 was a hot new topic, a COVID-19 Smartphone application was launched by the Massachusetts General Hospital in Boston (where I was born) and King's College (London) to capture real-time data on possible COVID symptoms, infections, tests, and vaccinations. I enrolled a month later in early April 2020 and have been reporting my health status (almost) every day since.