but, at this stage, what is confirmed to be dominant are subvariants of omicron called b.4 and b.5," said phaahla.

kodwa kulesi sigaba, osekuqinisekisiwe ukuthi yikhona okudlangile yimixhantela yegciwane iomicron ebizwa ngeb.4 neb.5," kusho uphaahla.
