KONTAN.CO.ID - GENEVA. The World Health Organization's European head on Tuesday warned countries to brace for a "significant surge" in COVID-19 cases as Omicron spreads, saying the variant has so far circulated mostly among young adults.

Since it emerged in late November, Omicron has been detected in at least 38 of the 53 countries in the WHO's European region and is already dominant in several of them including Denmark, Portugal and the United Kingdom, Hans Kluge told a news conference in Vienna.

"We can see another storm coming," said Kluge. "Within weeks, Omicron will dominate in more countries of the region, pushing already stretched health systems further to the brink."

Meriahkan Hari Pelanggan Nasional, Maybank Indonesia Perkuat Hubungan dengan Nasabah

The WHO's Europe region includes Russia and other former Soviet republics as well as Turkey.

Read Also: Now Dominant Omicron Dashes New York's Christmas Cheer as COVID Surges

WHO data shows the region has in recent weeks reported the highest number of COVID-19 cases compared to the population size anywhere. Even before Omicron, officials had warned of a further 700,000 deaths from the disease by March.

So far, 89% of the early Omicron cases in Europe were associated with common COVID symptoms such as cough, sore throat and fever, Kluge said. Most cases had been reported among adults in their 20s and 30s, spreading initially in cities at social and workplace gatherings, he added.

"The sheer volume of new COVID-19 infections could lead to more hospitalizations and widespread disruption to health systems and other critical services," he said, urging people to get vaccinated and boosted and to limit socialising.

"Governments and authorities need to prepare our response systems for a significant surge."

The WHO warned on Monday that Omicron is spreading faster than the Delta variant, causing infections in people already vaccinated or recovered from the disease. Its chief scientist has called it "unwise" to conclude from early evidence it is a milder variant than previous ones.

Read Also: Moderna Could Be Ready to Develop Omicron Booster in Weeks