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Japanese study: 3 months after vaccination with 2 doses, the protection against Omicron is greatly reduced

2021-12-29T05:10:10.666Z


The research team of Kitasato University in Japan used cultured cells to conduct experiments and showed that compared to the new coronavirus pneumonia mutant virus strain Delta, 3 months after the complete vaccination, the blood antibodies against the mutant virus strain Omicron (Omicron)


The research team of Kitasato University in Japan used cultured cells to conduct experiments and showed that compared with the new crown pneumonia mutant virus strain Delta, the protective effect of antibodies in the blood against the mutant virus strain Omicron (Omicron) was greatly reduced after 3 months of complete vaccination. More than 70 to 80%.


Taiwan’s Central News Agency quoted the Japan Broadcasting Association (NHK) as saying on December 27 that it previously cited overseas research reports that the protective effect of existing vaccines against Omicron may be significantly reduced.

The research team led by Professor Kazuhiko Katayama from Kitasato University aimed at 6 people in Japan who had been vaccinated with 2 doses of Pfizer and Moderna vaccines, using cultured cells to conduct experiments to investigate the protective effect of antibodies in the blood. .

New crown pneumonia epidemic in Japan: The picture shows a Japanese student receiving a new crown pneumonia vaccination at a university vaccination center in Tokyo on August 2.

(AP)

Experimental results showed that after 3 months of inoculation with 2 doses of Pfizer vaccine, the neutralizing antibody value against Omicron decreased by an average of 72% compared to the Delta mutant strain.

In addition, 3 months after vaccination with Modena vaccine, the neutralizing antibody value against Omicron dropped by an average of 82%.

Omicron|Modena booster can effectively cope with the 37-fold increase in neutralizing antibodies against new variants. The first domestically effective drug|Data shows that it can reduce the death and severe cases of new coronary pneumonia by 80%. Merrill Research: "3 vaccines" are not as good as Omicron Effective as imagined

Professor Katayama said that in principle, this is only an experiment. In fact, the effect of the vaccine will not completely disappear, but it has been confirmed that in Japan, the protective effect of the vaccine against Omicron has decreased.

To prevent Omicron, even if vaccinated, the basic epidemic prevention measures must be followed thoroughly.

Source: hk1

All news articles on 2021-12-29

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