I don't think there's anything more than just lots of anecdotal evidence from people who had similar things around then, were convinced they'd had Covid-19, but have all tested negative for SARS-CoV-2 antibodies.
@Greenbank started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
I don't think there's anything more than just lots of anecdotal evidence from people who had similar things around then, were convinced they'd had Covid-19, but have all tested negative for SARS-CoV-2 antibodies.