WHO says, Omicron variant poses very high global risk

In anticipation of increased case numbers as the variant, first reported last week in South Africa, spreads, the UN agency urged its 194 member states to accelerate vaccination of high-priority groups and ensure plans were in place to maintain health services.

No Omicron-linked deaths had yet been reported, though further research was needed to assess its potential to escape protection against immunity induced by vaccines and previous infections, it added.

The heavily mutated Omicron coronavirus variant is likely to spread internationally and poses a very high risk of infection surges that could have “severe consequences” in some places, the World Health Organization (WHO) said on Monday.

Tedros Adhanom Ghebreyesus, WHO Director-General, sounded the alarm at the start of an assembly of Health Ministers that is expected to launch negotiations on an international agreement on preventing future pandemics.

“The emergence of the highly mutated Omicron variant underlines just how perilous and precarious our situation is,” Mr. Tedros said.

“Omicron demonstrates just why the world needs a new accord on pandemics: our current system disincentivises countries from alerting others to threats that will inevitably land on their shores.”

The accord, expected by May 2024, would cover issues such as sharing of data and genome sequences of emerging viruses, and of any potential vaccines derived from research. Omicron was first reported on November 24 from South Africa, where infections have risen steeply.

It has since spread to more than a dozen countries, many of which have imposed travel restrictions to try to seal themselves off. Japan on Monday joined Israel in saying it would close its borders to foreigners.

The WHO reiterated that, pending further advice, countries should use a “risk-based approach to adjust international travel measures in a timely manner”, while acknowledging that a rise in coronavirus cases might lead to higher morbidity and mortality rates.

“The impact on vulnerable populations would be substantial, particularly in countries with low vaccination coverage,” the agency said.

In vaccinated persons, meanwhile, “COVID-19 cases and infections are expected … albeit in a small and predictable proportion”.

Overall, there were “considerable uncertainties in the magnitude of immune escape potential of Omicron”, and more data was expected in coming weeks.

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