ALSO READ: Covid-19: Immense efforts are on for next-generation vaccines, says top health expert "There might be a completely new variant emerging that we are not able to predict today," Marco Cavaleri added.
Earlier on 1 September, the EMA approved vaccines by Pfizer/BioNTech and Moderna that are adapted to tackle the older BA.1 subvariant of Omicron.
According to details, the Pfizer version updated for the now-dominant BA.4 and 5 strains should be authorised in mid-September, while a similar Moderna jab is also in the pipeline. "But these new Omicron-adapted jabs will largely be reserved for boosters for the elderly, the vulnerable, pregnant women and healthcare workers," Cavaleri said, adding most people will get the original vaccines that are designed to tackle the Wuhan strain of coronavirus.