On February 15, the Central Epidemic Command Center (CECC) announced that the COVID-19 vaccination registration and appointment reservation system ("the System") will be open for scheduling booster dose appointments starting February 16 in order to provide multiple options for the public to schedule an appointment and thus, allow the public to gain protection more quickly. In the 23rd round, booster shots will be given to individuals aged 18 or older who have received two doses of a COVID-19 vaccine for 12 weeks. Eligible people who have booked an appointment with a healthcare facility or local health center each local government designates to give booster shots are urged to get vaccinated as scheduled, and they do not need to book another appointment on the System.

Eligibility and schedules are listed below.

A. Vaccination: from February 21 to 27, 2022.

B. Eligibility: individuals aged 18 or older (born on or before February 27, 2004) who received a second dose of a COVID-19 vaccine at least 12 weeks ago, before December 5, 2021, are eligible to get a booster dose.

C. Time slots for scheduling appointments:
a. Individuals aged 55 or older: from 10 a.m. on February 16 to 12 p.m. on February 18.
b. Individuals aged 38-54: from 12 p.m. on February 16 to 12 p.m. on February 18.
c. Individuals aged 18-37: from 2 p.m. on February 16 to 12 p.m. on February 18.