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On March 18, an examiner in Xi'an City who completed two doses of vaccination was diagnosed with a case of new coronary pneumonia.
Almost a month has passed, what is the situation of this infected person? After vaccination, there is still infection.
"One pass, multiple" did not happen
"One pass, multiple" did not happenJudging from the previous local epidemic situation, generally speaking, once a case of new coronavirus infection is found, multiple infections around it will be found.
This means that the vaccination has played a role in blocking the spread of the virus.
According to news reports at the time, the staff in the inspection department where the inspector worked, except for those who did not meet the vaccination requirements, had basically been vaccinated against the new crown vaccine.
Shao Yiming, a researcher at the Chinese Center for Disease Control and Prevention and a consultant to the World Health Organization's Vaccine Research and Development Committee, explained in an interview with the media that vaccine protection is divided into three levels.
According to the three-level prevention regulations of public health measures: the first-level prevention is called etiological prevention to prevent infection; the second-level prevention is pre-clinical prevention to prevent and reduce the possibility of infection of people around; the third-level prevention is clinical prevention , To prevent the onset of disease and turn serious.
As a public health measure, vaccination is to achieve the first level of prevention, but when there is still infection, the vaccine can still achieve the second and third levels of prevention, that is: symptomatic but not infecting others, while preventing the disease.
Get a vaccine to prevent severe illness
Get a vaccine to prevent severe illnessAlthough the real cause of the infection after vaccination has not been found so far, the effect of preventing severe illness is very clear.
It is inevitable that the virus will "take advantage of the loopholes" after a vaccine, because no vaccine has a 100% protection rate.
Individual differences in vaccines are relatively large.
While paying attention to differences, the commonality that vaccines can prevent severe illness is proven through a number of large-scale population clinical trials.
This shows that the current Chinese new crown vaccine has done a very good job in preventing severe illness and death.
As for the prevention of new coronavirus infections, different technical routes may be slightly different.
Regarding the need to replant the new crown vaccine at this stage, relevant experts said: Based on current experience, the duration of antibodies produced by the vaccine should not be short.