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UK Health Secretary says Omicron will become dominant variant in London in next 48 hours


This photo taken on December 7, 2021 shows a sign of the World Health Organization (WHO) at their headquarters in Geneva.
This photo taken on December 7, 2021 shows a sign of the World Health Organization (WHO) at their headquarters in Geneva. (Fabrice Coffrini/AFP/Getty Images)

The World Health Organization says the overall risk from the Omicron variant remains high and more information is still needed on the variant, the World Health Organization said in a technical summary of the variant, compiled by the World Health Organization. announced on Friday.

“The overall risk associated with the new variant of interest to Omicron remains very high for a number of reasons,” the technical summary said. “First, the overall global risk of COVID-19 remains very high, and second, the preliminary evidence suggests that the ability to escape humoral immunity against infection and the high rate of transmission, may lead to to aggravation with serious consequences. Our understanding is still evolving and the risk assessment will be updated as more information becomes available. ”

According to WHO, the overall threat of Omicron depends on three main factors:

  • How is the variation transmissible?
  • How vaccines and prior infections prevent infection, transmission, clinical illness, and death
  • How Toxic Is Omicron Compared To Other Variants

The WHO said Omicron appears to have a growth advantage over Delta, adding that it is spreading faster than Delta in South Africa, where Delta traffic is low. However, it also appears to spread more rapidly in countries with high rates of Delta disease, based on current limited evidence, the organizations said.

“Given the currently available data, it is likely that Omicron will outstrip the Delta variant, where community transmission occurs,” WHO said.

According to WHO, there are limited data on the clinical severity and vaccine potency or effectiveness for Omicron.

In terms of clinical severity, WHO says that although initial findings suggest it may be less severe than Delta and the cases reported to date have been mild or asymptomatic, it “has yet to be It is clear to what extent Omicron may be less virulent.”

More data is needed to understand the severity profile.

On vaccine potency and effectiveness, WHO says there is currently little data available and no peer-reviewed evidence. Preliminary evidence and the altered antigenic profile of the mutant protein of Omicron also suggest that the vaccine’s effectiveness against infection and transmission may be reduced. There is also preliminary evidence that reinfection in South Africa has increased, possibly related to humoral immunity avoidance.

According to WHO, the accuracy of PCR and antigen-based rapid diagnostic tests does not appear to be affected by Omicron.

As for treatments, WHO says that therapeutic interventions that target the host response – corticosteroids, for example – will still be effective. However, monoclonal antibodies will have to be tested individually.

WHO sets out a number of priority actions for member states. These include increased surveillance, laboratory testing for Omicrons, vaccinations, a risk-based approach in regulating international travel measures, social and public health measures. community, health care system readiness, risk communication, and community participation.

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