On March 18,A novel coronavirus pneumonia was diagnosed by a surveyor in the isolation area of eighth hospital in Xi'an.The symptoms were common type, which was confirmed again in China after 38 days.
According to the joint expert group of Shaanxi Province, Liu was accidentally exposed in an isolated and closed ward, causing accidental infection.
In this regard, many people are very concerned about why they will still be infected if they have been vaccinated?
On March 21, the joint prevention and control mechanism of the State Council specially held a press conference on the safety and effectiveness of the new coronavirus vaccine. Wang Huaqing, chief expert of immunization program of China CDC, gave an authoritative interpretation of this.
Mr Wang said:
He pointed out that,In fact, according to the post marketing evaluation results of the new crown vaccines used in foreign countries, it is true that a small number of people fail to protect after vaccination, which may be caused by individual reasons and some other reasons.
For this infection incident in Xi'an, relevant authorities are conducting relevant investigation and tracking.
Zeng Guang, former chief epidemiologist of the Chinese Center for Disease Control and prevention, also pointed out earlier,The protection rate of new crown vaccine is not 100% (in fact, it is the case with any vaccine), and it is safer than absolute safety after vaccination. Tens of millions of people have been vaccinated with the domestic new crown vaccine at home and abroad, and the safety and effectiveness have been fully confirmed. The public need not doubt the domestic vaccine because of this case.
At present, four new coronavirus vaccines have been conditionally launched in China, and another one has been approved for emergency use.
In terms of efficacy, the protection efficacy of Xinguan inactivated vaccine developed by Sinopharm China biological group reached 86%, the effectiveness of preventing moderate cases was 100%, and the effectiveness of preventing severe cases was 100%.
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