Healthy Concepts clinic offers HIV, Syphilis, Chlamydia and Gonorrhea testing each Wednesday, 1-5 p.m. Galveston County Health District and the Animal Resource Center will be closed Thursday, Nov. 25 and Friday, Nov. 26 in observance of Thanksgiving. The ARC will reopen Saturday, Nov. 27 and health district offices will reopen Monday, Nov. 29..