Those aged between 18 and 49 who are in priority groups and are living outside the greater Seoul area can book their COVID-19 vaccine from 8 PM on Wednesday.
Local governments have given priority to roughly 2 million people.
These include essential workers like delivery staff and street cleaners, the underprivileged like the handicapped and migrant workers, and those who work in high-risk facilities, like singing rooms and PC rooms.
The capital area allowed bookings for those groups on Tuesday evening, and from Thursday, people from all regions will be able to book their first shot.
The government has staggered bookings according to region to prevent people from overwhelming the vaccine reservation system.
And from next Monday, vaccine bookings will start for the remaining 17 million people, between the ages of 18 and 49.
The day that they can use the booking system is based on their birthdays.
For example, those whose birthday ends with 9, can reserve the vaccines on August 9th.
This comes as South Korea on Tuesday inoculated close to 219-thousand people.
39.three percent of the population have now received at least one dose of the vaccine.
Health authorities on Wednesday showed confidence in vaccine supplies and the reservation system.
"Today, 1-million-188-thousand doses of AstraZeneca and 2-million-530-thousand doses of Pfizer will come into the country. Our vaccine reservation system is also continuously improving."
Health authorities also said that they're close to striking a deal for 50 million more doses of Covid vaccines, mostly mRNA, for next year.
Kim Yeon-seung, Arirang News