Omicron variant BA.2.75, which has gained ground in India and shows up in several countries, may be able to spread rapidly and get around immunity from vaccines and previous infections, scientists say.
The vaccine can now be used as a booster following the two-dose Vaxzevria schedule or by those who have been vaccinated by an mRNA vaccine, such as the ones by Pfizer and BioNTech or Moderna.
The Geneva-based organisation has long said the true number of deaths would be far higher than just the recorded fatalities put down to Covid infections.
World Health Organization notes 50 of the 53 countries and territories in its European region have reported the variant, as it calls for indoor mask mandate and speedy vaccinations.
The World Health Organization urges caution over the Omicron variant, saying it has a growth advantage over the Delta variant.
We speak with health experts to make sense of the latest data coming out of South Africa, and how far it will apply elsewhere.
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