At this time, Covid-19 vaccine (Pfizer) availability is primarily limited to government hospitals. The Institute of Dermatology (No. 456 Rajavithi Road) has availability for walk-ins for those aged 5 and up from 09.00-15.00 daily. December 17 they will offer a Saturday option. This is open to Thai and Expats at no charge.
Thonburi Banrungmuang (private), however does offer vaccines for children aged 6 months and up. Please reach out to the hospital for details.
The bivalent booster (Pfizer & Moderna) has been projected to arrive in early 2023.