To make sure that Hana employees are safe from Covid-19, we continue to reserve Covid-19 vaccine as much as possible. Finally, Hana-AYT received vaccine quota from Social Security Office (SSO) for 1,306 HC. The vaccination from July to August 2021 with assurance of the National Communicable Disease Committee to provide first dose Sinovac and second dose AstraZeneca as the second. The two-brand-approach is believed to lead for a better protection against infection or becoming seriously ill with Covid-19.