There are two kinds of STDs: those that can be successfully treated and those that cannot. Now gonorrhea, a sexually transmitted disease that has typically been cured through a course of antibiotics, is moving into the untreatable camp. Neisseria gonorrhoeae, the bacterium that causes gonorrhea, is developing resistance to the only antibiotics that can treat it.
The World Health Organization has issued new guidelines for the treatment of gonorrhea after many new antibiotic-resistant strains have emerged around the world. The WHO recommends doctors use cephalosporins instead of quinolones (both of which are classes of antibiotics), changing the protocol for gonorrhea treatment for the first time since 2003.