WHO Designates Omicron as New COVID-19 Variant of Concern
The World Health Organization classifies the B.1.1.529 strain, now named Omicron, as a Variant of Concern due to a high number of mutations and early signs of increased reinfection risk. The agency urges countries to ramp up surveillance and sequencing efforts immediately.
The World Health Organization designates the B.1.1.529 strain as a Variant of Concern and names it Omicron. An independent group of experts advises this classification after evaluating the variant, which first emerges in South Africa and coincides with a steep increase in local infections. Preliminary evidence points to a higher risk of reinfection compared to previous variants.
This variant possesses a large number of concerning mutations, but current PCR tests still successfully detect it. In fact, one widely used PCR test shows a specific S gene target failure that acts as a distinct marker for Omicron without requiring full sequencing. Data using this detection method indicates the variant spreads at faster rates than previous infection surges.
As a result of this classification, the WHO asks countries to enhance their surveillance and sequencing efforts to track the virus. The health agency requests that nations submit complete genome sequences to public databases and report initial Omicron cases through international health regulations. Ongoing studies continue to evaluate the exact behavior and impact of the Omicron variant.