Naming Omicron

 

Sir, – Your correspondent An tAthair Seán Ó Coinn (Letters, November 30th) asked what happened to the Epsilon variant of Covid (et al). With the notable exception of “nu” these letters have been used for confirmed variants that have not been regarded as variants of concern. – Yours, etc,

RICHARD BANNISTER,

Ballsbridge,

Dublin 4.