What impact will new screening techniques have on the epidemiology of STIs worldwide

WHO estimates that globally there are over 200 million new cases of Chlamydia trachomatis and Neisseria gonorrhoeae per year and 10–15% of women with undiagnosed or repeat infection will develop pelvic inflammatory disease (PID) [101]. Syphilis infection has serious consequences in both sexes and it is estimated that approximately 1.4 million pregnant women are infected with syphilis per year globally, of these over 500,000 will experience adverse outcomes of pregnancy: 40% of these stillbirths and 17% neonatal or early infant deaths [1]. All three of these common bacterial STIs are treatable, and their adverse outcomes preventable. The majority of these cases are asymptomatic, making the need for robust screening strategies a public health priority.