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*¾Æ·¡´Â À§ ±â»ç¸¦ ±¸±Û ¹ø¿ª±â·Î ¹ø¿ªÇÑ ¿µ¹® ±â»çÀÇ [Àü¹®]ÀÌ´Ù. [Below is the [full text] of an English article translated from the above article with Google Translate.]

 

Why is AstraZeneca vaccine expected to be effective at an average of 70%?

 

The market was confused by the surprise announcement that the AstraZeneca Corona 19 vaccine had a higher preventive effect in the low-dose group than in the high-dose group as a result of the intermediate clinical phase 3 clinical result.

 

AstraZeneca, a multinational pharmaceutical company, announced on the 23rd (local time) that the Corona 19 vaccine, which is being developed jointly with Oxford University in the UK, showed an average efficacy of 70.4% and a maximum of 90% of the preventive effect in the intermediate results of phase 3 clinical trials.

 

This ambiguous figure is said to be due to experiments with different vaccination doses during the phase 3 clinical trial.

 

AstraZeneca was tested at different doses of the vaccine in phase 3 clinical trials of 24,000 people in the UK and Brazil, and both administration groups received two doses.

 

The 2741 patients in the first dose group received the'half dose + full dose' method. It is a method of inoculating only half the dose at the first time and then administering additional full doses one month later.

 

8895 people in the second administration group were vaccinated in the'all + all' method. Both the first vaccination and one month after the vaccination were administered all the doses of one dose.

 

As a result, the prophylactic effect of the first administration group was 90% and the second was 62%, showing a large difference. Accordingly, the company announced that it showed a 70.4% prevention effect by synthesizing this (11,636 people). No significant abnormalities were found.

 

About the difference in dosage in phase 3 clinical trials, AstraZeneca's vice president of research and development team said it was actually a'mistake'.

 

In an interview with the British Guardian, vice president Mene Pangalos said, "Half the medication was'serendipity'." It is the luck I found by chance.

 

"At the end of April, some groups found that side effects such as fatigue, headache, and muscle pain were much less than expected, and as a result of checking their data, we belatedly found out that the first dose of the vaccine was only half."

 

Therefore, the pharmaceutical companies also did not know exactly the reason why the half + full dose administration method was so effective in preventing.

 

Professor Sarah Gilbert of Oxford University, who led the study, only gave a speculative answer that "administering a small dose of vaccine and then administering large doses may be a way to stimulate the immune system and lead to a strong immune response."

 

On the other hand, AstraZeneca's vaccine is'public' even with a relatively low efficacy of 70% on average, so expectations are higher than the previous US's Moder and Pfizer's vaccines.

 

AstraZeneca announced that it will make an urgent request for use to the World Health Organization (WHO) so that the vaccine can be quickly used in low-income countries, along with the announcement of the third phase. They pledged to provide about 1 billion doses of vaccine to developing countries by the end of 2020.

 

Also, the distribution process of AstraZeneca's vaccine is not difficult. It can be stored for up to 6 months in a general refrigerator. Therefore, it is easy to spread even to the poorest countries where the situation is poor.

 

"The most ideal is a vaccine that has a long shelf life, is stable at any temperature, and is easy to administer," said Seth Berkeley, chairman of the GAVI Association, in an interview with the BBC. "The advantage of the AstraZeneca vaccine is that it can be stored in a general refrigerator that maintains 2-8 degrees Celsius. It is similar to the characteristics of general vaccines distributed in developing countries."

  
±â»çÁ¦º¸ ¹× º¸µµÀÚ·á 119@breaknews.com
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