I got the first available Covid jabs back in June. Sinovac followed by Astra Zeneca. Now I am wanting to get a booster, either Moderna or Phizer. I am willing to pay. I have seen no info on booster shots in Chiang Mai. Are the hospitals doing them? All of them? Anywhere else?

I've got the same question. In July and August, I was one of the many foreigners getting the Sinovac, then 4 weeks later, in Aug, the AZ, at McCormick Hospital. All these were, if I recall, 4 day events for each episode. Thus, if I read the booster shot criteria accurately, 6 months later is when booster shots should come into view, meaning sometime in February. Obviously, if things are as orderly as they were in July/Aug, I'm expecting to hear about boosters, beginning in February.

Talked this morning to someone at Rajaveh Hospital where I had 2 AZ jabs, the last being in mid September.  She said that they were expecting to offer boosters but didn't have a start date.

Currently boosters only for people who got 2*sino shots.

You could of course try to buy a moderna or sinopharm shot somewhere.