In this month's Microbe Talk, Lilly chats with microbiologist Prof Wilhelmina Huston about what science knows so far about the relationship between the vaginal microbiome - the composition of microbes that live on and within the vagina - and sexual health, including her recent research investigating how the microbial composition of the vagina can impact susceptibility to painful conditions, like pelvic inflammatory disease (PID). We also cover current treatments and where the future of treatment of STIs and other sexual health disorders is headed.