The new coronavirus variant Omicron is spreading across the globe at an unprecedented rate, the World Health Organization (WHO) has warned

Cases of the heavily mutated variant have been confirmed in 77 countries.

But at a press conference, WHO chief Tedros Adhanom Ghebreyesus said it was probably in many others that had yet to detect it.

Dr. Tedros said he was concerned that not enough was being done to tackle the variant.

“Surely, we have learned by now that we underestimate this virus at our peril. Even if Omicron does cause less severe disease, the sheer number of cases could once again overwhelm unprepared health systems,” he said.

  • Is Omicron milder despite dodging immunity?
  • Why do boosters work if two doses struggle?
  • Is low vaccination a factor in the rise of Omicron?

The Omicron variant was first identified in South Africa in November, and the country has since seen a surge in infections. President Cyril Ramaphosa has tested positive for Covid-19 and is currently isolated with mild symptoms.

A number of countries have introduced travel bans affecting South Africa and its neighbors following the emergence of Omicron, but this has failed to stop it from spreading around the world.

In other developments

  • More than 800,000 Americans have now died from the coronavirus – the highest recorded national death toll from the global pandemic
  • UK Prime Minister Boris Johnson won backing for Covid passes in England, despite the biggest revolt by members of his party since he became PM
  • The UK government also announced on Tuesday that all 11 countries on its travel red list would be taken off, with Health Secretary Sajid Javid saying the Omicron variant had spread so widely the rules no longer had many purposes.
  • Italy has extended a state of emergency until 31 March 2022, citing concerns over Omicron. The measures, which were due to expire at the end of December, give the government more power to limit travel and public gatherings
  • The Netherlands says it will close primary schools a week before the Christmas holidays are due to start, in a pre-emptive bid to tackle infections
  • Norway has announced a ban on serving alcohol in bars and restaurants, among other measures

In the press conference on Tuesday, Dr. Tedros reiterated concerns about vaccine inequity, as some countries accelerate rollouts of a booster shot in response to Omicron.

Recent studies of the Pfizer/BioNTech vaccine showed it produced far fewer neutralizing antibodies against Omicron than against the original strain, but that this deficit could be reversed by a third, booster, jab.

Dr Tedros said boosters “could play an important role” in curbing the spread of Covid-19, but that it was “a question of prioritisation”.

“The order matters. Giving boosters to groups at low risk of severe disease or death simply endangers the lives of those at high risk who are still waiting for their primary doses because of supply constraints,” he said.

Supplies to the global vaccine-sharing program Covax have increased in recent months.

However, world health officials fear a shortfall of tens of millions of doses – like the one which occurred in the middle of this year when India suspended its vaccine exports – could happen again.

In poorer countries, some vulnerable people are yet to receive a single dose.

This information is regularly updated but may not reflect the latest totals or vaccines administered for each location. Total vaccinations refer to the number of doses given and may include booster doses in addition to those required for full vaccination. The definition of full vaccination varies by location and vaccine type and is subject to change over time. Full vaccination can refer to one dose of a one-shot vaccine, two doses of a two-dose vaccine, etc., or sometimes recovery from infection plus one dose of a vaccine. Definitions have not yet been updated to account for booster campaigns to control the spread of new variants.

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Last Updated: 15th Dec 2021