A study reveals the low effectiveness of two doses of vaccines in fighting `Omicron`... What about the booster dose?

Weather of Arabia - British scientists have concluded that the vaccination system with two doses of a vaccine to prevent Covid-19 does not lead to the production of sufficient antibodies to fight the mutated or micron of the Corona virus, which is likely to increase infections among those who were previously infected with the disease or were vaccinated with vaccines.

Study: Two doses of vaccines are not enough to fight the mutant Omicron

On Monday, researchers from the University of Oxford published the results of an as-yet-unreviewed study in which they analyzed blood samples from people who had previously received two doses of the AstraZeneca-Oxford and Fierce-Biontech vaccines.

The results of the study come a day after the warning issued by British Prime Minister Boris Johnson when he said that two doses of the vaccine would not be enough to curb the mutant Omicron.

Another study (not yet reviewed) on the three anti-coronavirus vaccines (Moderna, Johnson & Johnson, and Pfizer) reported that the vaccines appeared to be significantly less able to provide protection from the Omicron mutant during laboratory experiments, and the study conducted by researchers at Massachusetts General Hospital indicated. Of Harvard University and the Massachusetts Institute of Technology, it is possible that vaccines may restore their effectiveness against "Omicron" to a large extent through a booster dose .

Omicron is capable of resisting antibodies

The latest study tested the blood of people who had received the Moderna, Johnson & Johnson and Pfizer vaccines, against a virus designed to resemble the "Omicron" strain.

The researchers found that the ability of antibodies to resist the strain was low or no when obtaining vaccines according to the usual regimens, which are two doses for the Moderna or Pfizer vaccines, or one dose of the Johnson & Johnson vaccine.

While the study found that the blood sample drawn from new recipients of a booster dose showed strong resistance to the strain, Reuters reported.

The scientists also suggested that "Omicron" is more contagious than the previous strains of concern, which appeared in the form of a doubling of the susceptibility to infection compared to the currently circulating Delta strain, which may be surpassed by "Omicron" soon.

Pfizer also said last week that a three-dose regimen of the Covid-19 vaccine would be able to neutralize the new strain "Omicron" during a laboratory experiment, but having two doses stimulated the antibodies less.

Moderna and Johnson & Johnson have not yet published any of their own data on whether their vaccines are resistant to the new strain.

The Director-General of the World Health Organization, Tedros Ghebreyesus, announced that the "Omicron" mutant, which first appeared in South Africa and Hong Kong last month, has so far been monitored in 77 countries, and that it can be present in most parts of the world, and should not be considered a "moderate" strain. ".