Symptoms and risks of Omicron

Variant of concern Omicron, the recently-discovered variant of the coronavirus which was first detected in southern Africa, has been declared to be a variant of concern by the World Health Organization.

The WHO said on Friday that omicron, named after a letter in the Greek alphabet, was first reported to it from South Africa on November 24 and the first known confirmed infection was from a specimen collected on November 9.

Based on the evidence presented indicative of a detrimental change in Covid-19 epidemiology, the TAG-VE has advised WHO that this variant should be designated as a VOC, and the WHO has designated B.1.1.529 as a VOC, named Omicron,” the global health body said in a statement.

Scientists have said the omicron variant appears to have a high number of mutations — about 30 — in the coronavirus’ spike protein, which could affect how easily it spreads to people.

The WHO, which convened a meeting of a group of experts on Friday to assess the data, said that “preliminary evidence suggests an increased risk of reinfection with this variant,” as compared to other variants. “The number of cases of this variant appears to be increasing in almost all provinces in South Africa,” the health body said.

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Omicron’s actual risks are not understood. But early evidence suggests it carries an increased risk of reinfection compared with other highly transmissible variants, the WHO said. That means people who contracted COVID-19 and recovered could be subject to catching it again. It could take weeks to know if current vaccines are less effective against it.

In response to the variant’s discovery in southern Africa, the United States, Canada, Russia and a host of other countries joined the European Union in restricting travel for visitors from that region, where the variant brought on a fresh surge of infections.

Omicron

The White House said the U.S. will restrict travel from South Africa and seven other countries in the region beginning Monday. Biden issued a declaration later Friday making the travel prohibition official, with exceptions for U.S. citizens and permanent residents and for several other categories, including spouses and other close family.

There was no immediate indication whether the variant causes more severe disease. As with other variants, some infected people display no symptoms, South African experts said. The WHO panel drew from the Greek alphabet in naming the variant omicron, as it has done with earlier, major variants of the virus.

Even though some of the genetic changes appear worrisome, it was unclear how much of a public health threat it posed. Some previous variants, like the beta variant, initially concerned scientists but did not spread very far.

Fears of more pandemic-induced economic turmoil caused stocks to tumble in Asia, Europe and the United States. The Dow Jones Industrial Average briefly dropped more than 1,000 points. The S&P 500 index closed down 2.3%, its worst day since February. The price of oil plunged about 13%.

“The last thing we need is to bring in a new variant that will cause even more problems,” German Health Minister Jens Spahn said. Members of the 27-nation EU have experienced a massive spike in cases recently.

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