Scientists have found the first "superbug" strain of gonorrhea -- a discovery they're calling "both alarming and predictable."Found in Japan, the H041 strain is resistant to the class of antibiotics, called cephalosporins, commonly used to treat the STD.This could "transform a once easily treatable infection into a global public health threat," reports Reuters.Gonorrhea has become increasingly resistant to antibiotics for several years now, and the percentage of cephalosporin-resistant gonorrhea cases in the U.S. is on the rise, according to the CDC's latest Morbidity and Mortality Weekly Report.