Omicron spreads faster, vaccines arguably less effective

Omicron spreads faster and vaccines are arguably less effective

MISE & Agrave; DAY

The Omicron variant of the coronavirus responsible for COVID-19 appears to spread more than the Delta variant, causing less severe symptoms and making vaccines less effective, the WHO said on Sunday, which points out that the The data remains very fragmented. & nbsp;

Omicron is now present in 63 countries, the organization said in a technical update, which confirms the statements of its officials in recent days.

According to the WHO, Omicron does appear to be spreading faster than the Delta variant, which is still responsible for the bulk of infections worldwide. This faster diffusion is seen not only in South Africa, where Delta was less prevalent, but also in the United Kingdom, where this variant dominates.

WHO does not know at this time – for lack of sufficient data – whether this high diffusion rate in populations with high immunity is due to Omicron 'evading immunity, enjoying inherent higher transmissibility, or a combination of the two' .

The organization predicts, however, that “Omicron is likely to outperform Delta in places where there is community transmission.”

The data are not yet sufficient either to establish the degree of severity of the disease caused by Omicron, although for the moment the symptoms appear “mild to moderate” both in southern Africa, where it has been detected, as well as in southern Africa, where it has been detected. in Europe. & nbsp;

As for anti-COVID vaccines, the limited data available as well as Omicron's genetic profile suggest “a decrease in efficacy” with regard to protection against ” infection and transmission ”.

For their part, the Pfizer and BioNTech laboratories – which developed the Cominarty vaccine, one of the most effective against COVID so far – assured at the end of last week that it was “still effective” after three doses against Omicron.

The majority of countries which can afford it are already encouraging populations to be given a booster dose. This is particularly the case in Europe faced with a new wave of infections, caused by Delta, following the premature abandonment of health restrictions, but also sometimes insufficient vaccination rates.


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