Tackling COVID-19 will require the first-ever deployment of blockchain in the global distribution of a vaccine. Blockchain offers an immutable, decentralized database that can help all parties be sure that vaccine supplies are being stored and handled properly. In recent weeks, not one but two companies have announced COVID-19 vaccines with efficacy rates of more than 90%. Both results are highly impressive, not only in their effectiveness, but also in the relatively short time it took to develop them. A years-long process has been shortened to mere months. Such an achievement is a first for vaccine development. ... (full story)