No doubt about it, there could be a witch's brew of germs wherever you turn in public restrooms. Many people consider toilet seats to be public enemy No. 1 -- theplayground for organisms responsible for STDs like chlamydia or gonorrhea. But before you panic, the toilet seat is not a common vehicle for transmitting infections to humans. Many disease-causing organisms can survive for only a short time on the surface of the seat, and for an infection to occur, the germs would have to be transferred from the toilet seat to your urethral or genital tract, or through a cut or sore on the buttocks or thighs, which is possible but very unlikely."To my knowledge, no one has ever acquired an STD on the toilet seat -- unless they were having sex on the toilet seat!" says Abigail Salyers, PhD, president of the American Society for Microbiology (ASM).