Stealth Pathogens in Fertility: An Overlooked Driver of ‘Unexplained’ Infertility? Many infertility cases remain ‘unexplained’, but what if key drivers are simply being overlooked? Despite advances in reproductive medicine, a significant proportion of patients continue to receive no clear diagnosis following standard investigations. Emerging clinical evidence suggests that stealth infections (pathogens that evade routine detection and persist at low-grade activity)