Instant International
Written by: Xu Yi'an
2021-06-29 09:39
Last update date: 2021-06-29 09:40
The Oxford Vaccine Group announced the results of the Com-Cov vaccine study on June 29. It was found that when people were vaccinated against the new coronavirus pneumonia (COVID-19), they were vaccinated with "AstraZeneca Vaccine" and "Pfizer Vaccine". It can stimulate the immune system and increase the level of antibodies in the body.
Com-Cov's trial studies two doses of Pfizer vaccine and two doses of AstraZeneca vaccine, and what happens after they are vaccinated.
It turned out that all combinations promoted the immune system.
The test results also suggest that people who have received two doses of the AstraZeneca vaccine will have a stronger immune response if they choose another vaccine when they receive the booster.
The Pfizer vaccine is jointly developed by the American pharmaceutical company Pfizer and BioNTech, and the AstraZeneca vaccine is jointly developed by the British pharmaceutical company AstraZeneca and the University of Oxford.
The British Broadcasting Corporation (BBC) quoted expert opinions on June 29 as saying that this would help increase the flexibility of the vaccination plan.
British Deputy Chief Medical Officer Jonathan Van-Tam said that there is no reason to change the current arrangements for 2 vaccination with the same vaccine, but in the future, the plan of "groove injection" to inject boosters will bring greater flexibility to the government.
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Com-Cov’s trial examined the response of 850 people aged 50 or above to different vaccine combinations. It found:
・People who vaccinate AstraZeneca first and then Pfizer will have higher antibody levels and T cell immune responses than those who vaccinate Pfizer first and then AstraZeneca;
・Whether it is "AstraZeneca first, Pfizer second" or "Pfizer first, AstraZeneca second", the level of induced antibodies is higher than that of 2 doses of AstraZeneca;
・Inject two doses of Pfizer vaccine, the antibody response is the highest; the order of vaccination is "AstraZeneca first, then Pfizer", the T cell immune response is the highest.
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On the 29th, the BBC also quoted another preprint of the research results released on the 29th but not peer-reviewed, saying that 6 months after the second dose, the third dose (booster) of the AstraZeneca vaccine is helpful Boost the immune system.
New crown pneumonia new crown vaccine Pfizer AstraZeneca vaccine