From stigma to sigma? The covid variant naming conundrum continues

On 31 May the World Health Organisation tweeted: “Today WHO has announced a new naming system for key #COVID19 variants. The labels are based on the Greek alphabet (i.e. Alpha, Beta, Gamma, etc), making them simple, easy to say and remember.” In her retweet of that tweet Alice Roberts said “…delta, epsilon, zeta, eta, theta, …