The booster shot of COVID-19 vaccine is not so effective against Omicron?

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The booster shot of COVID-19 vaccine is not so effective against Omicron?

U.S. CDC preliminary data shows that the booster shot is not so effective against the Omicron variant?

The COVID-19 Omicron mutant strain is the strain with the strongest transmission power, pathogenicity to be seen, and the highest proportion of breakthrough infections caused by the COVID-19 vaccine among all the strains currently known .

Previously, only one corridor away in Hong Kong, the Omicron strain broke through two lines of defense in three days , and its spread was worrying.

Last week, many researchers in the world claimed that the three-targeted Omicron variant is effective , but even this has a relatively high percentage of breakthrough infections.

The CDC in the United States shows that the effectiveness of the strengthening of Omicron has also been greatly reduced

Recently, the US CDC released a report analyzing the breakthrough infection of Omicron mutant strain.

The report pointed out that from December 1st to 8th, there were 43 cases in 22 states in the United States.

One of them was hospitalized and there were no deaths.

Among these 43 cases, 34 people completed two doses of the COVID-19 vaccine (mRNA COVID-19 vaccine) , and 14 of them also received a booster shot.

It can be seen that, whether the existing COVID-19 vaccine is two or three shots, the effectiveness of the Omicron mutant strain is greatly reduced, and we urgently need a more effective COVID-19 vaccine. But in this regard, we still need more data.

The spread of the COVID-19 Omicron strain is astonishing, and the number of cases in Denmark doubled in 1.6 days

The transmission of the Omicron mutant is amazing. In the past 24 hours, 1576 cases of the Omicron mutant were detected in the UK, and the number of cases caused by this strain doubled in just 1.7 days.

The Danish data is even more frightening. The number of cases infected with this strain doubled within 1.6 days, while in South Africa, the number of cases caused by Omikeron doubled in three days.

There is currently a surge in Omicron cases in the UK. British Prime Minister Johnson recently stated that “at least one patient has been confirmed to have died of the Omicron strain.”

The red box is the growth curve of Omicron cases in the UK

The growth rate of Omicron cases in Denmark, the United Kingdom, and South Africa

Earlier this month, the United States discovered the first case of an infected person with the Omicron mutant. After half a month has passed, more than 30 states have appeared with the mutant.

Due to the significant decline in the effectiveness of existing vaccines against Omi-Kronon mutants and the looser anti-epidemic policies in the United States , Omi-Kronon mutants are likely to set off a new round of COVID-19 pneumonia pandemics in the United States.

Although the Delta strain still plunges the United States into the quagmire of the COVID-19, the United States has seen more than 170,000 new cases in a single day.

However, because the Omicron mutant strain can cause breakthrough infections, once it becomes the main mutant strain, the COVID-19 pneumonia infection The number will surge.

Recently, Zhang Wenhong, director of the Department of Infectious Diseases at Huashan Hospital affiliated to Fudan University, shared his views on the new coronavirus variant “Omicron”, “We can envision several future scenarios of Omicron’s spread.

The best situation is its The virulence is weak and only spread in South Africa; the acceptable situation is that its spread is strong and the virulence is strong, but the vaccine is effective against it; the most serious situation is that its transmission is strong, the virulence is strong, and the vaccine is strengthened It is not effective.

Then we need to re-examine the vaccine strategy and at the same time tighten prevention and control.”

The booster shot of COVID-19 vaccine is not so effective against Omicron?

(source:internet, reference only)

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