Count 2020 as a lucky year. This may sound odd given that the world grappled with a pandemic that has killed close to 1.8-million people and crippled many countries’ economies. The “luck” relates to the more than 90% efficacy of the two vaccines — Pfize-BioNTech’s shot and Moderna’s candidate — that gained emergency approval after thorough clinical analysis.

Enormous leaps in science and technology helped make this happen and could well speed the end of the pandemic. And more vaccines are on the way. Unfortunately, there is a risk that this early success leads to complacency...

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