https://theconversation.com/coronavirus-reinfection-what-it-actually-means-and-why-you-shouldnt-panic-144965
https://www.euronews.com/2020/08/25/two-cases-of-covid-19-reinfection-reported-in-europe
Researchers find first proven case of Covid-19 reinfection
University of Hong Kong says 33-year-old man caught virus in March and again in August
www.ft.com