The WHO has identified Alpha, Beta, Gamma and Delta as ‘variants of concern’ – these are variants which it says is associated with one or more of an “increase in transmissibility or ...

From Alpha, Beta, Gamma to Delta: What we know of coronavirus mutations so far. ... These have been assigned letters from the Greek alphabet for identification. As of June 29, ...

2:21 B.1.617.2 COVID-19 variant now ‘dominant’ in United Kingdom The new convention uses letters from the Greek alphabet to identify the various variants, which up to this point have been ...