Research conducted by the University of Hong Kong and the Chinese University of Medicine School of Medicine has shown that the new variant virus strain Omicron significantly weakens the neutralizing antibodies of the Forbitux vaccine by 97%, reducing the vaccine's effectiveness in preventing infection.
However, Xu Shuchang, a government expert consultant and chair professor of the Department of Respiratory Medicine at CUHK, today (13) on the Hong Kong and Taiwan program "Millenniums". Although Bitai was under Omicron, the neutralizing antibody dropped from 320 units to 10 units, but the vaccine triggered The T cell response is still effective in reducing the risk of severe illness and death.
The new coronavirus strain Omicron has many mutations.
(Profile picture/Photo by Zheng Zifeng)
Although Omicron has reduced the anti-Bitaly neutralizing antibody Xu Shuchang: it can still effectively prevent severe illness and death
Xu Shuchang pointed out that the University of Hong Kong and the Faculty of Medicine of the Chinese University previously recruited people who were vaccinated with Fubitai and Kexing vaccines, and studied them to test the Wuhan original virus one month after the two doses of the vaccine and when the antibody level is still high. The neutralizing antibody levels of strains and Omicron.
Under the influence of Omicron, the level of neutralizing antibody dropped from 320 units to 10 units in those who were vaccinated with Forbitux. Generally, it takes at least 25 units to work.
However, he pointed out that the T cell response triggered by the vaccine can also effectively prevent severe illness and death.
It is expected that the second-generation vaccine will not be immediately available on the market. People should not wait for injections
He pointed out that Pfizer's report showed that after the third shot of Forbitux, the level of neutralizing antibodies could jump 25 times, while data from Israel also showed that the third shot could make the level of antibodies jump 100 times, and studies in the United Kingdom also showed that After the third shot, the protective force can increase by 70%.
He pointed out that it is expected that the second-generation vaccine will not be launched on the market immediately, and that the public should not wait.
Xu Shuchang, Chair Professor of Respiratory Department of CUHK.
(Profile picture)
In response to the Omicron outbreak, the first two doses of vaccination rate should be increased
The Science Committee under the Department of Health will meet on the 23rd of this month. Xu Shuchang said that there is no agenda yet, but it is expected that the third injection will be discussed.
He pointed out that in response to the Omicron outbreak, it is expected that the time for the second and third injections needs to be shortened, but the time between the two injections needs to be decided by a meeting.
Israel has prepared the fourth dose of vaccination. He pointed out that the risk of outbreak in Hong Kong is not high. The first two doses are to increase the vaccination rate and the implementation of the third dose of vaccination.
In the next few weeks, I can get a glimpse of the severe illness caused by Omicron.
The new crown vaccine clinical event assessment expert committee jointly convened the man Kong Fanyi to point out that the new variant virus strain Omicron broke out in Europe and it is expected that severe cases will be seen in the next few weeks. A high ratio will be "a headache".
Omicron | Hong Kong's first research to prove that the neutralizing antibody of Fubitai vaccine was cut by 97% and still effective to prevent severe Omicron |
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