Gamma

WHO: New Covid strain Omicron 'variant of concern'

The UN organisation said it could take several weeks to complete studies of the new variant and that the number of Omicron cases appeared to be increasing in almost all provinces of South Africa.

Covid-19 variants named after Greek letters to curb stigmatising countries

WHO renames four coronavirus variants known generally as UK, South Africa, Brazil and India variants as Alpha, Beta, Gamma, Delta after other nomenclatures, such as Greek gods and bird names, were rejected.