Cyprus have started using blockchain to battle Covid.<p><a href="https://cointelegraph.com/news/cyprus-hospital-ready-to-store-covid-19-test-results-on-blockchain" rel="nofollow">https://cointelegraph.com/news/cyprus-hospital-ready-to-stor...</a>
(I work for a blockchain company.) It is still a useful pattern. It was definitely overhyped. There is still a useful core value proposition there and the market will settle out towards where it makes sense.