Overseas studies have shown that the second shot of the Pfizer-Biontech vaccine after the first shot of the COVID-19 vaccine developed by AstraZeneca (AZ) and Oxford University is effective and safe. The National Assembly also seems to be interested in responding to domestic quarantine authorities regarding cross-vaccination. Based on overseas research results, The KCDA has decided to carry out research on cross-vaccination of COVID-19.

According to the multiple members of the National Assembly's Health and Welfare Committee on the 20th, quarantine authorities such as the KCDA will be asked about the possibility of cross-vaccination and future plans for the COVID-19 vaccine.

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