The rise of the omicron variant has caused havoc around the world, just as the emergence of the delta and alpha variants did before. A pattern has emerged, with the world scrambling to respond to a new form of the coronavirus every six or so months. How can we reduce the risk of new variants appearing again and again?
Firstly, let’s consider how they emerge. A virus reproduces by making copies of itself. Every time it replicates, there’s a tiny chance that an error occurs in the copying of the virus’s genetic sequence.