LONDON — The global risk of the new omicron variant is “very high,” the World Health Organization said Monday, as more countries reported cases of the variant, sparking worldwide concern that there is more pandemic suffering ahead.

In response to the spike in cases, an increasing number of nations are tightening their borders despite pleas for caution and outbursts of dismay from some. 

South African doctor who first spotted the Covid omicron variant says symptoms seem ‘mild’ so far

Covid symptoms linked to the new omicron variant have been described as “extremely mild” by the South African doctor who first raised the alarm over the new strain.

Dr. Angelique Coetzee, chair of the South African Medical Association, told the BBC on Sunday that she started to see patients around Nov.18 presenting with “unusual symptoms” that differed slightly from those associated with the delta variant, which is the most virulent strain of the virus to date and globally dominant.

“It actually started with a male patient who’s around the age of 33 ... and he said to me that he’s just [been] extremely tired for the past few days and he’s got these body aches and pains with a bit of a headache,” she told the BBC.

Researchers are racing to determine whether a fast-spreading variant in South Africa poses a threat to COVID vaccines’ effectiveness.

Researchers in South Africa are racing to track the concerning rise of a new variant of the SARS-CoV-2 coronavirus that causes COVID-19. The variant harbours a large number of the mutations found in other variants, including Delta, and it seems to be spreading quickly across South Africa.

A top priority is to follow the variant more closely as it spreads: it was first identified in Botswana earlier this month and has since turned up in a traveller arriving in Hong Kong from South Africa. Scientists are also trying to understand the variant’s properties, such as whether it can evade immune responses triggered by vaccines and whether it causes more or less severe disease than other variants do.

“We’re flying at warp speed,” says Penny Moore, a virologist at the University of the Witwatersrand in Johannesburg, South Africa, whose lab is gauging the variant’s potential to dodge immunity from vaccines and previous infections. There are anecdotal reports of reinfections and of cases in vaccinated individuals, but “at this stage it’s too early to tell anything”, Moore adds.