The University of Hong Kong announced that a study by the microbiology team found that most people who have received two doses of the new crown vaccine, including Forbitux and Kexing, have levels of serum antibodies that are insufficient to resist the new Omicron variant virus.
The team pointed out that before a new generation of vaccines against the Omicron variant virus appears, it is recommended that the public should be vaccinated as soon as possible.
The research results have been accepted for publication in the medical journal "Clinical Infectious Diseases".
The Hong Kong University research team tested the sera of 25 donors in two groups that had been injected with two injections of BNT162b2 or Coronavac vaccine.
The study tested two existing Omicron variants in Hong Kong, one from South Africa and the other from Nigeria, containing an additional R346K mutation.
The experiment also tested the neutralizing ability of serum antibodies against Alpha, Bata, and Delta virus strains as a control.
The 10-fold dilution of serum from Kexing vaccinators has been unable to neutralize Omicron
The results of the study showed that the resistance of the serum antibodies of the two vaccinators to the Omicron variant virus was greatly reduced.
Among the 25 vaccinators of Fubitai, only 5 had the ability to neutralize the Omicron variant virus, and the vaccine efficiency was greatly reduced to only 20-24%.
Compared with the original SARS-CoV-2 strain, the concentration of neutralizing antibodies against the Omicron variant is reduced by 36-40 times.
The ten-fold dilution of the serum of 25 Kexing vaccine vaccinators has been unable to neutralize Omicron virus.
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