HomeNews DCH offers free testing for sexually transmitted diseases (STDs) By Ann Cochran - August 22, 2021 0 796 FacebookTwitterPinterestWhatsApp Gonorrhea is a sexually transmitted disease (STD) caused by a bacterium called Neisseria gonorrhoeae. The Dallas County Hospital in Perry is offering free testing for sexually transmitted diseases (STDs). Ann Cochran is the health navigation coordinator in the Dallas County Public Health Department.