South Korea has now given first doses of COVID-19 vaccines to 20 million people.
And the pace of the rollout should pick up as health authorities on Tuesday said that more than 28 million doses of vaccines will be procured this month.
First to come are 2.5 million doses of Pfizer, and 1.1 million doses of AstraZeneca, which will be supplied on Wednesday.
And next week, 100-thousand doses of Janssen vaccines will be available for over 50s.
They will also be used for over 30s who are unable to receive two shots, or require early vaccination.
This includes those who must depart for overseas activities, unregistered foreigners and the homeless.