On July 18, the Central Epidemic Command Center (CECC) announced that based on statistics, individuals in the top three priority groups and pregnant women, who received their first dose of the Moderna vaccine between June 9 and July 9, can receive their second dose of the vaccine before August 6 (a minimum 28-day interval between the two doses) to ensure effective use of vaccine.

Additionally, the CECC reminds members of the public who received their first shot of the AstraZeneca vaccine between May 11 and May 23 that a 10-week interval between the two doses of the vaccine will be reached for them starting the next week and that those individuals can register their willingness to receive their second shot on the COVID-19 vaccination registration and appointment reservation system or they can make an appointment at a healthcare facility contracted for COVID-19 vaccinations.