Chief Executive Carrie Lam said in a media interview yesterday that Kexing will continue to be vaccinated for the third shot, adding that “antibody does not mean that the higher the number, the more great it is, but enough.” Respiratory specialist Liang Zichao this morning (5th) When interviewed by the business station, it was stated that antibodies are only an immune response, and the level of antibodies to achieve protection has not yet been determined. It is difficult to determine whether a person’s antibody level is protective. Therefore, antibodies should not be used as a reference. Consideration of the third stitch.
Respiratory system specialist Liang Zichao said in an interview with Business Channel this morning (5th) that antibodies are only an immune response. Antibodies must reach that level before they can achieve protective effects. So far, there is no conclusion.
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Liang Zichao said on the program that everyone responds to the vaccine differently and produces different levels of antibodies, but the level of antibodies does not represent protection, and it depends on the number of "memory cells."
Liang Zichao said that according to the preliminary results of the Chilean official study, people who have been vaccinated with Kexing, after the third shot of Kexing, the effect of symptomatic infection protection is 80%, such as the prevention of Bitax, and 90%; as for the prevention rate of severe illness, two supplements The dosage is 87% to 88%.
He pointed out that the results reflect that for those who were vaccinated with Kexing, the third injection "ditching" does not necessarily mean that the protection rate has increased a lot, and the results of the study are preliminary data, and there are still variables.
He also quoted the American medical journal "Acupuncture", even after vaccination with Fubitai, the antibody level is high and can prevent infection, but the protection rate after the completion of the vaccination has been 88% from the initial level to 47% after 5 months. Reflects high antibodies, not necessarily high protection rate.
It is recommended to refer to the WHO recommendation, except for those with low immunity, three injections are safer
The Science Committee currently recommends that certain groups be given the third dose of Fubitai; if the first two shots of Fubitai are given, it is not recommended to use Kexing.
Liang Zichao pointed out that the WHO currently recommends that if the first two shots of Kexing are given, the response is "nothing." It is recommended that Kexing be given the third shot, unless the injection is changed due to vaccine supply problems.
He suggested referring to the WHO recommendations. From a safety point of view, if the first two injections are no problem, and the same injection for the third time, severe allergies are less likely to occur, and there is no need to bear the risk of another vaccine, because small studies cannot. Exclude rare side effects caused by "groove needle".
He pointed out that if the immune system is suppressed and there is no response after two injections, a strong stimulation of immune antibodies is needed to have a chance to switch to another vaccine.
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