Covid-19: Omicron variant appears to spread faster and make vaccines less effective, says WHO

Omicron is now present in 63 countries, according to the World Health Organization, which specifies that the data remains incomplete.

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Published on 12/12/2021 5:38 PM

Updated on 12/12/2021 5:44 PM

Time to read : 1 minute.

We are starting to learn more about Omicron. This variant of the coronavirus responsible for Covid-19 appears to spread more than the Delta variant, causes less severe symptoms and makes vaccines less effective, the World Health Organization announced on Sunday, December 12. WHO stresses, however, that the data remains highly fragmented.

Omicron is already present in 63 countries, the organization said in a technical update, confirming the statements of its officials in recent days. According to the WHO, Omicron seems to spread faster than the Delta variant, which at the moment is still responsible for the majority of infections in the world. This faster spread is seen not only in South Africa, where Delta was less prevalent, but also in the United Kingdom, where this variant dominates.

The WHO does not know at this time, due to insufficient data, whether this high rate of spread in populations with high immunity is due to Omicron “evading immunity, taking advantage of the higher inherent transmissibility, or” it is a combination of the two. However, the organization predicts that “Omicron is likely to outperform Delta in places where there is community transmission.”

Les données ne sont pas encore suffisantes not plus pour établir le de gravité de la maladie provoked by Omicron, même si pour l’heure les symptômes paraissent “legers à modérés” also in Southern Africa, or a été détecté, which In Europe.

Regarding anti-Covid vaccines, the limited data available, as well as the genetic profile of Omicron, suggest “a decrease in efficacy” with respect to protection against “infection and transmission”. For their part, the laboratories Pfizer and BioNTech assured at the end of last week that “it was still effective” after three doses against Omicron.

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