United Community Health Center opened registration for adults 18 and older for Wednesday's vaccination site at Anamax Park in Sahuarita.
The UCHC site plans to distribute Moderna and is only for first-dose vaccinations. There are no other restrictions other than being 18 years and older.
There will also be a second vaccination site at Old Vail School on Friday. UCHC's registration website listed more than 600 appointments still available on Monday afternoon.