When the vaccine will be released in Korea, I will talk with medical reporter Cho Dong-chan.

Q. AstraZeneca vaccine, which is imminent to secure Korea, is effective?

[Cho Dong-chan/medical journalist (specialist): The results of phase 2 clinical trials for 560 people were published yesterday (18th) in the world's top three medical journals. It is safe and effective, and it has been shown to be particularly effective in the elderly over the age of 70. .

Since it is a phase 2 clinical trial, it is 95% effective like the Pfizer vaccine, and this result has not been reached, but it is known that the results of the phase 3 clinical trial for a total of 30,000 people will be released within this month. It is said to be as good as the Pfizer vaccine to understand.]

Q. What is the difference between the AstraZeneca vaccine and Pfizer?

[Dong-Chan Cho / Medical reporter (specialist): Pfizer vaccine is a principle of making a protein corresponding to the corona 19 virus by putting a gene called mRNA into the body and making an antibody that reacts to it. AstraZeneca vaccine is a spike protein in the corona 19 virus. Some of the same proteins are placed inside a living virus called chimpanzee adenovirus and then injected.

The Pfizer vaccine primarily activates antibody immunity, but the AstraZeneca vaccine activates not only antibody immunity, but also cellular immunity, which in theory works better.

Instead, although it weakened, there was a risk of complications such as spinal cord inflammation because the live virus was put into the body, but the research team announced that no significant complications occurred.]

Q. When can it be correct in Korea?

[Cho Dong-chan/medical reporter (specialist): It was reported that a contract with Korea is imminent. It is difficult this year, but it is expected that it will be possible next year.

However, even if an effective vaccine is available, it is difficult to end the infectious disease with just one vaccine.

This is because it is possible to end only when the diagnosis method and treatment method are firmly prepared along with the vaccine.