Illustration of Neisseria gonorrhoeae bacteria releasing DNA (light blue) with antibiotic resistance genes (yellow)NANOCLUSTERING/SCIENCE PHOTO LIBRARY Gonorrhoea is resistant to nearly all antibiotics, but one commonly used for urinary tract infections (UTIs) may be able to treat drug-resistant cases. The sexually transmitted infection (STI) is caused by Neisseria gonorrhoeae, a bacterium that can infect various parts of the body, including the genitals and urethra. Common symptoms include a burning pain when urinating and discharge from the vagina or penis. If left untreated, the infection can raise the risk of infertility and premature birth.