I, too, got Moderna bivalent at Chiang Mai Neurological Hospital - today.
No adverse effects at all. In and out in about 20 minutes.
I have no idea what Mor Prom is.
I guess it is doctor หมอ maaw, and Prom?
The only trouble was finding the place.
On Suthep Rd it is the first right after the McDonald's intersection - directly opposite Beats Cafe.