Korea to test AZ and Pfizer mix soon

Korea will start a clinical trial mixing Covid-19 vaccines to see if it can prevent Covid-19 more effectively.

A clinical trial to mix and match Covid-19 vaccines will begin in Korea to test whether it can prevent Covid-19 more effectively, local health officials said Thursday.

Lee Yoo-kyung, a senior health official responsible for immunization analysis, said studies of the Covid-19 vaccine mix in Spain, UK, Italy, Russia and China and that the results would be available soon.

In Korea, the Korea National Institute of Health (KNIH) will conduct the mix-dose trial, giving a dose of Pfizer to those who received the first dose of the AstraZeneca vaccine, Lee said.

About 400 to 500 people inoculated with the AZ vaccine will receive a dose of the Pfizer vaccine, she added.

“This study will be used to find ways to increase the safety and effectiveness of the Covid-19 vaccination,” Lee said.

However, military service members 30 years of age or younger receiving the first dose of the AZ vaccine will receive the second dose of the AZ vaccine, not a different vaccine, health officials said.

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